diff --git a/CHANGES.md b/CHANGES.md
index 7cfb486..80bd5fd 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -2,41 +2,42 @@
 
 ## Changelog
 
-| **Version** | **Changes**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | **Readiness** |
-|-------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------|
-| 3.17.1      | [Graph model] </br> <ul><li>added fulltext field on the instance level.</li><li>added extra organization specific PID types</li><ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | beta          |
-| 3.16.0      | [Graph model] </br> <ul><li>added entity level measures.</li><ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | beta          |
-| 3.15.0      | [Graph model] </br> <ul><li>added w3id as PID type, with ROHub as authority.</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | beta          |
-| 3.14.0      | [Graph model] </br> <ul><li>introduced specific type for result.subject</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | beta          |
-| 2.13.0      | [Scholexplorer] </br> <ul><li>update swagger annotation jar version to be compatible with new implementation of openAPI ui</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | beta          |
-| 2.12.1      | [Graph model] </br> <ul><li>added field oafEntity.eoscifguidelines</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | production    |
-| 2.12.0      | [Graph model] </br> <ul><li>Introducing EOSC Services as datasources</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | production    |
-| 2.11.33     | [Scholexplorer] </br> <ul><li>Moved Scholix API Data model into dhp-schemas</li><li>implementation of the compareTo method on Scholix objects and all model properties</li> <li>Unit Test to verify that compareTo works on different case</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | production    |
-| 2.10.31     | [Minor] </br>NPE checks                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | production    |
-| 2.10.30     | [Minor] </br>added comparator for refereed field instances                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | production    |
-| 2.10.29     | [Merge Result] </br>merge logics changed to consider invisble in dataInfo                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | production    |
-| 2.10.28     | [Graph Model] </br> Added APC information at the level of the result                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | production    | 
-| 2.10.27     | [Graph Model] </br> change name and id of OpenAPC datasource                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | production    |
-| 2.10.26     | [Graph Model] </br> OpenAIRE ids of the delegated authorities and enrichment providers in the identifier creation strategy                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | production    |
-| 2.10.25     | [Graph model]</br>implemented enrichment on Result specializing in the method mergefrom.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | production    |
-| 2.10.24     | [Graph model]</br>added utility method and constants for checking weather is an OafEntity represents an enrichment.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | production    |
-| 2.9.24      | [Dump model]</br>change the names of the classes to be able to automatically create the json schema with specific descriptions                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | production    |
-| 2.9.23      | [Graph model]<br>Added Instance.measures field, allowing to maintain the association between them and the individual result instance</br>[Dump model]</br>added json schemas                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | production    |
-| 2.8.22      | [Graph model]<br>minor: added serializable to the Measures model class</br>[Dump model]</br>added dedicated BestAccessRight class, used at the result level instead of AccessRight                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | production    |
-| 2.8.21      | [Graph model]<br>added the following relation terms Describes/IsDescribedBy, IsMetadataFor/IsMetadataOf, HasAssociationWith/HasAssociationWith, IsRequiredBy/Requires. All these are used in combination with the relation subRelType "relationship"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | production    |
-| 2.8.20      | [Graph model]<br>added constants declaring the values used for hierarchical relationships among the organizations IsParentOf / IsChildOf                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | production    |
-| 2.7.18-19   | [Dump model]<br>include validation info in relations<br>[Graph model]<br>added constants declaring vocabulary names for relation fields                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | production    |
-| 2.7.17      | [Dump model]<br>aligned the graph dump schema to mirror the changes in the model<br>1. Added openaccessroute at the level of the instance inside the AccessRight element;<br>2. Added pid and the alternate identifiers at the level of the instance;<br>3. Added the bipFinder measures                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | production    |
-| 2.7.16      | [Graph model]<br>Updated the casing of the following terms (`relation.relClass`):<br>1. `isRelatedTo -> IsRelatedTo`<br>Added the following `relClass` terms:<br>1. `IsAmongTopNSimilarDocuments`<br>2. `HasAmongTopNSimilarDocuments`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | production    |
-| 2.7.15      | 1. added support for delegated authorities<br>2. fixed regex for DOI cleaning                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | production    |
-| 2.7.14      | [Graph model]<br>Relation types are now inspired by the Datacite definitions https://schema.datacite.org/meta/kernel-4.4/doc/DataCite-MetadataKernel_v4.4.pdf <br>The changes involve the values stored in `relation.subRelType` and `relation.relClass`:<br>Updated the casing of the following terms (`relation.relClass`):<br>1. `isSupplementTo -> IsSupplementTo` / `isSupplementedBy -> IsSupplementedBy`<br>2. `isPartOf -> IsPartOf` / `hasPart -> HasPart`<br>3. `cites -> Cites` / `isCitedBy -> IsCitedBy`<br>4. `reviews -> Reviews` / `isReviewedBy -> IsReviewedBy`<br>Added the following terms [`subRelType: relClass / relClass (inverse)`]:<br>1. `relationship: References / IsReferencedBy`<br>2. `relationship: IsIdenticalTo`<br>3. `relationship: IsContinuedBy / Continues`<br>4. `relationship: IsDocumentedBy	/ Documents`<br>5. `relationship: Documents / IsDocumentedBy`<br>6. `relationship: IsCompiledBy / Compiles`<br>7. `version: IsPreviousVersionOf / IsNewVersionOf`<br>8. `version: IsSourceOf / IsDerivedFrom`<br>9. `version: IsVariantFormOf / IsOriginalFormOf`<br>10. `version: IsObsoletedBy / Obsoletes`<br>11. `version: IsVersionOf / HasVersion`                                  | production    |
-| 2.6.14      | [Scholexplorer]<br>1. Added model classes for Scholexplorer, package `eu.dnetlib.dhp.schema.sx`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | production    |
-| 2.6.13      | 1. `Result.mergeFrom` handles field `dateOfAcceptance`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | production    |
-| 2.5.12      | 1. delegating the date parsing to https://github.com/sisyphsu/dateparser                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | production    |
-| 2.5.[11-9]  | 1. support for more date formats<br>2. enable the possibility to extend the date formats used to parse `Relation.validationDate`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | production    |
-| 2.4.8       | 1. added constant for ORCID datasource name                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | production    |
-| 2.4.7       | refactoring                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | production    |
-| 2.3.6       | [Aggregation]<br>1. introduced MetadataStoreManager (MdSM) model classes                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | production    |
-| 2.2.5       | [Graph model]<br>1. introduced fields `Instance.pid` and `Instance.alternateIdentifier`<br>2. `LicenseComparator` renamed as `AccessRightComparator`<br>3. introduced `AccessRight` model class defining the `OpenAccessRoute` field to keep track of the OpenAccess color at the `Instance` level<br>4. `ExternalReference` cleanup (removed description, added alternateLabel(s))<br>5. added several ModelConstants<br>[Aggregation]<br>7. introduced MDStore record model classes<br>8. Introduced ORCID specific model classes                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | production    |
-| 2.2.4       | 1. ORCID specific model classes backported in the version used in PROD<br>2. added constant for dnet:externalReference_typologies<br>3. added constant for ORCID datasource name<br>4. `Result.mergeFrom` handles field `dateOfAcceptance`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | production    |
+| **Version** | **Changes**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | **Readiness** |
+|-------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------|
+| 4.17.1      | [Graph model] </br> <ul><li>added InstaceTypeMapping field on the instance level.</li><ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | beta          |
+| 3.17.1      | [Graph model] </br> <ul><li>added fulltext field on the instance level.</li><li>added extra organization specific PID types</li><ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | production    |
+| 3.16.0      | [Graph model] </br> <ul><li>added entity level measures.</li><ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | production    |
+| 3.15.0      | [Graph model] </br> <ul><li>added w3id as PID type, with ROHub as authority.</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | production    |
+| 3.14.0      | [Graph model] </br> <ul><li>introduced specific type for result.subject</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | production    |
+| 2.13.0      | [Scholexplorer] </br> <ul><li>update swagger annotation jar version to be compatible with new implementation of openAPI ui</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | production    |
+| 2.12.1      | [Graph model] </br> <ul><li>added field oafEntity.eoscifguidelines</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | production    |
+| 2.12.0      | [Graph model] </br> <ul><li>Introducing EOSC Services as datasources</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | production    |
+| 2.11.33     | [Scholexplorer] </br> <ul><li>Moved Scholix API Data model into dhp-schemas</li><li>implementation of the compareTo method on Scholix objects and all model properties</li> <li>Unit Test to verify that compareTo works on different case</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | production    |
+| 2.10.31     | [Minor] </br>NPE checks                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | production    |
+| 2.10.30     | [Minor] </br>added comparator for refereed field instances                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | production    |
+| 2.10.29     | [Merge Result] </br>merge logics changed to consider invisble in dataInfo                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | production    |
+| 2.10.28     | [Graph Model] </br> Added APC information at the level of the result                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | production    | 
+| 2.10.27     | [Graph Model] </br> change name and id of OpenAPC datasource                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | production    |
+| 2.10.26     | [Graph Model] </br> OpenAIRE ids of the delegated authorities and enrichment providers in the identifier creation strategy                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | production    |
+| 2.10.25     | [Graph model]</br>implemented enrichment on Result specializing in the method mergefrom.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | production    |
+| 2.10.24     | [Graph model]</br>added utility method and constants for checking weather is an OafEntity represents an enrichment.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | production    |
+| 2.9.24      | [Dump model]</br>change the names of the classes to be able to automatically create the json schema with specific descriptions                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | production    |
+| 2.9.23      | [Graph model]<br>Added Instance.measures field, allowing to maintain the association between them and the individual result instance</br>[Dump model]</br>added json schemas                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | production    |
+| 2.8.22      | [Graph model]<br>minor: added serializable to the Measures model class</br>[Dump model]</br>added dedicated BestAccessRight class, used at the result level instead of AccessRight                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | production    |
+| 2.8.21      | [Graph model]<br>added the following relation terms Describes/IsDescribedBy, IsMetadataFor/IsMetadataOf, HasAssociationWith/HasAssociationWith, IsRequiredBy/Requires. All these are used in combination with the relation subRelType "relationship"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | production    |
+| 2.8.20      | [Graph model]<br>added constants declaring the values used for hierarchical relationships among the organizations IsParentOf / IsChildOf                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | production    |
+| 2.7.18-19   | [Dump model]<br>include validation info in relations<br>[Graph model]<br>added constants declaring vocabulary names for relation fields                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | production    |
+| 2.7.17      | [Dump model]<br>aligned the graph dump schema to mirror the changes in the model<br>1. Added openaccessroute at the level of the instance inside the AccessRight element;<br>2. Added pid and the alternate identifiers at the level of the instance;<br>3. Added the bipFinder measures                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | production    |
+| 2.7.16      | [Graph model]<br>Updated the casing of the following terms (`relation.relClass`):<br>1. `isRelatedTo -> IsRelatedTo`<br>Added the following `relClass` terms:<br>1. `IsAmongTopNSimilarDocuments`<br>2. `HasAmongTopNSimilarDocuments`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | production    |
+| 2.7.15      | 1. added support for delegated authorities<br>2. fixed regex for DOI cleaning                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | production    |
+| 2.7.14      | [Graph model]<br>Relation types are now inspired by the Datacite definitions https://schema.datacite.org/meta/kernel-4.4/doc/DataCite-MetadataKernel_v4.4.pdf <br>The changes involve the values stored in `relation.subRelType` and `relation.relClass`:<br>Updated the casing of the following terms (`relation.relClass`):<br>1. `isSupplementTo -> IsSupplementTo` / `isSupplementedBy -> IsSupplementedBy`<br>2. `isPartOf -> IsPartOf` / `hasPart -> HasPart`<br>3. `cites -> Cites` / `isCitedBy -> IsCitedBy`<br>4. `reviews -> Reviews` / `isReviewedBy -> IsReviewedBy`<br>Added the following terms [`subRelType: relClass / relClass (inverse)`]:<br>1. `relationship: References / IsReferencedBy`<br>2. `relationship: IsIdenticalTo`<br>3. `relationship: IsContinuedBy / Continues`<br>4. `relationship: IsDocumentedBy	/ Documents`<br>5. `relationship: Documents / IsDocumentedBy`<br>6. `relationship: IsCompiledBy / Compiles`<br>7. `version: IsPreviousVersionOf / IsNewVersionOf`<br>8. `version: IsSourceOf / IsDerivedFrom`<br>9. `version: IsVariantFormOf / IsOriginalFormOf`<br>10. `version: IsObsoletedBy / Obsoletes`<br>11. `version: IsVersionOf / HasVersion` | production    |
+| 2.6.14      | [Scholexplorer]<br>1. Added model classes for Scholexplorer, package `eu.dnetlib.dhp.schema.sx`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | production    |
+| 2.6.13      | 1. `Result.mergeFrom` handles field `dateOfAcceptance`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | production    |
+| 2.5.12      | 1. delegating the date parsing to https://github.com/sisyphsu/dateparser                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | production    |
+| 2.5.[11-9]  | 1. support for more date formats<br>2. enable the possibility to extend the date formats used to parse `Relation.validationDate`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | production    |
+| 2.4.8       | 1. added constant for ORCID datasource name                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | production    |
+| 2.4.7       | refactoring                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | production    |
+| 2.3.6       | [Aggregation]<br>1. introduced MetadataStoreManager (MdSM) model classes                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | production    |
+| 2.2.5       | [Graph model]<br>1. introduced fields `Instance.pid` and `Instance.alternateIdentifier`<br>2. `LicenseComparator` renamed as `AccessRightComparator`<br>3. introduced `AccessRight` model class defining the `OpenAccessRoute` field to keep track of the OpenAccess color at the `Instance` level<br>4. `ExternalReference` cleanup (removed description, added alternateLabel(s))<br>5. added several ModelConstants<br>[Aggregation]<br>7. introduced MDStore record model classes<br>8. Introduced ORCID specific model classes                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | production    |
+| 2.2.4       | 1. ORCID specific model classes backported in the version used in PROD<br>2. added constant for dnet:externalReference_typologies<br>3. added constant for ORCID datasource name<br>4. `Result.mergeFrom` handles field `dateOfAcceptance`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | production    |
 
diff --git a/pom.xml b/pom.xml
index c70a6f3..6272e36 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <groupId>eu.dnetlib.dhp</groupId>
     <artifactId>dhp-schemas</artifactId>
     <packaging>jar</packaging>
-    <version>3.17.2-SNAPSHOT</version>
+    <version>4.17.2-SNAPSHOT</version>
 
     <licenses>
         <license>
diff --git a/src/main/java/eu/dnetlib/dhp/schema/oaf/Instance.java b/src/main/java/eu/dnetlib/dhp/schema/oaf/Instance.java
index 42b8931..095eae5 100644
--- a/src/main/java/eu/dnetlib/dhp/schema/oaf/Instance.java
+++ b/src/main/java/eu/dnetlib/dhp/schema/oaf/Instance.java
@@ -12,6 +12,8 @@ public class Instance implements Serializable {
 
 	private Qualifier instancetype;
 
+	private List<InstanceTypeMapping> instanceTypeMapping;
+
 	private KeyValue hostedby;
 
 	private List<String> url;
@@ -68,6 +70,14 @@ public class Instance implements Serializable {
 		this.instancetype = instancetype;
 	}
 
+	public List<InstanceTypeMapping> getInstanceTypeMapping() {
+		return instanceTypeMapping;
+	}
+
+	public void setInstanceTypeMapping(List<InstanceTypeMapping> instanceTypeMapping) {
+		this.instanceTypeMapping = instanceTypeMapping;
+	}
+
 	public KeyValue getHostedby() {
 		return hostedby;
 	}
diff --git a/src/main/java/eu/dnetlib/dhp/schema/oaf/InstanceTypeMapping.java b/src/main/java/eu/dnetlib/dhp/schema/oaf/InstanceTypeMapping.java
new file mode 100644
index 0000000..ac8e6a2
--- /dev/null
+++ b/src/main/java/eu/dnetlib/dhp/schema/oaf/InstanceTypeMapping.java
@@ -0,0 +1,61 @@
+package eu.dnetlib.dhp.schema.oaf;
+
+import java.io.Serializable;
+
+/**
+ * Defines a mapping between the original resource types and the type code and label available in a given vocabulary.
+ */
+public class InstanceTypeMapping implements Serializable {
+
+    /**
+     * Original resource type, typically mapped from dc:type, datacite:resourceType.
+     */
+    private String originalType;
+
+    /**
+     * Contains the code of the resource type resulted from the mapping.
+     */
+    private String typeCode;
+
+    /**
+     * Contains the label of the resource type resulted from the mapping.
+     */
+    private String typeLabel;
+
+    /**
+     * Contains name of the vocabulary used to produce this resource type mapping.
+     */
+    private String vocabularyName;
+
+    public String getOriginalType() {
+        return originalType;
+    }
+
+    public void setOriginalType(String originalType) {
+        this.originalType = originalType;
+    }
+
+    public String getTypeCode() {
+        return typeCode;
+    }
+
+    public void setTypeCode(String typeCode) {
+        this.typeCode = typeCode;
+    }
+
+    public String getTypeLabel() {
+        return typeLabel;
+    }
+
+    public void setTypeLabel(String typeLabel) {
+        this.typeLabel = typeLabel;
+    }
+
+    public String getVocabularyName() {
+        return vocabularyName;
+    }
+
+    public void setVocabularyName(String vocabularyName) {
+        this.vocabularyName = vocabularyName;
+    }
+}