diff --git a/src/main/java/org/gcube/informationsystem/base/reference/IdentifiableElement.java b/src/main/java/org/gcube/informationsystem/base/reference/IdentifiableElement.java
index a2c65ff..422a717 100644
--- a/src/main/java/org/gcube/informationsystem/base/reference/IdentifiableElement.java
+++ b/src/main/java/org/gcube/informationsystem/base/reference/IdentifiableElement.java
@@ -12,7 +12,7 @@ import org.gcube.informationsystem.model.reference.properties.Metadata;
  * 
  * @author Luca Frosini (ISTI - CNR)
  */
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY })
+@JsonPropertyOrder({ IdentifiableElement.ID_PROPERTY,  Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.METADATA_PROPERTY })
 public interface IdentifiableElement extends Element {
 	
 	public static final String ID_PROPERTY = "id";
diff --git a/src/main/java/org/gcube/informationsystem/base/reference/entities/EntityElement.java b/src/main/java/org/gcube/informationsystem/base/reference/entities/EntityElement.java
index 27755c6..f293c4c 100644
--- a/src/main/java/org/gcube/informationsystem/base/reference/entities/EntityElement.java
+++ b/src/main/java/org/gcube/informationsystem/base/reference/entities/EntityElement.java
@@ -18,7 +18,7 @@ import org.gcube.informationsystem.utils.Version;
  */
 @Abstract
 @JsonIgnoreProperties(ignoreUnknown=true)
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY })
+@JsonPropertyOrder({ IdentifiableElement.ID_PROPERTY, Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.METADATA_PROPERTY })
 //@JsonDeserialize(as=EntityElementImpl.class) Do not uncomment to manage subclasses
 @TypeMetadata(name = EntityElement.NAME, description = "This is the base type for any EntityElement", version = Version.MINIMAL_VERSION_STRING)
 @Change(version = Version.MINIMAL_VERSION_STRING, description = Version.MINIMAL_VERSION_DESCRIPTION)
diff --git a/src/main/java/org/gcube/informationsystem/model/reference/ERElement.java b/src/main/java/org/gcube/informationsystem/model/reference/ERElement.java
index 09a0e50..3965179 100644
--- a/src/main/java/org/gcube/informationsystem/model/reference/ERElement.java
+++ b/src/main/java/org/gcube/informationsystem/model/reference/ERElement.java
@@ -16,7 +16,7 @@ import org.gcube.informationsystem.base.reference.IdentifiableElement;
  * 
  * @author Luca Frosini (ISTI - CNR)
  */
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY })
+@JsonPropertyOrder({ IdentifiableElement.ID_PROPERTY, Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY })
 public interface ERElement extends IdentifiableElement {
 
 	/**
diff --git a/src/main/java/org/gcube/informationsystem/model/reference/entities/Entity.java b/src/main/java/org/gcube/informationsystem/model/reference/entities/Entity.java
index 66c7189..38ca262 100644
--- a/src/main/java/org/gcube/informationsystem/model/reference/entities/Entity.java
+++ b/src/main/java/org/gcube/informationsystem/model/reference/entities/Entity.java
@@ -19,7 +19,7 @@ import org.gcube.informationsystem.utils.Version;
  * @author Luca Frosini (ISTI - CNR)
  */
 @Abstract
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY })
+@JsonPropertyOrder({ IdentifiableElement.ID_PROPERTY, Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY })
 //@JsonDeserialize(as=EntityImpl.class) Do not uncomment to manage subclasses
 @TypeMetadata(name = Entity.NAME, description = "This is the base type for any Entity", version = Version.MINIMAL_VERSION_STRING)
 @Change(version = Version.MINIMAL_VERSION_STRING, description = Version.MINIMAL_VERSION_DESCRIPTION)
diff --git a/src/main/java/org/gcube/informationsystem/model/reference/entities/Resource.java b/src/main/java/org/gcube/informationsystem/model/reference/entities/Resource.java
index 7742dd8..babbdcc 100644
--- a/src/main/java/org/gcube/informationsystem/model/reference/entities/Resource.java
+++ b/src/main/java/org/gcube/informationsystem/model/reference/entities/Resource.java
@@ -29,7 +29,7 @@ import org.gcube.informationsystem.utils.Version;
  */
 @Abstract
 @JsonIgnoreProperties(ignoreUnknown=true)
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY, Resource.CONSISTS_OF_PROPERTY, Resource.IS_RELATED_TO_PROPERTY })
+@JsonPropertyOrder({ IdentifiableElement.ID_PROPERTY, Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY, Resource.CONSISTS_OF_PROPERTY, Resource.IS_RELATED_TO_PROPERTY })
 // @JsonDeserialize(as=ResourceImpl.class) Do not uncomment to manage subclasses
 @ResourceSchema(
 	facets={
diff --git a/src/main/java/org/gcube/informationsystem/model/reference/relations/Relation.java b/src/main/java/org/gcube/informationsystem/model/reference/relations/Relation.java
index 8d6d494..8e0cee3 100644
--- a/src/main/java/org/gcube/informationsystem/model/reference/relations/Relation.java
+++ b/src/main/java/org/gcube/informationsystem/model/reference/relations/Relation.java
@@ -35,7 +35,7 @@ import org.gcube.informationsystem.utils.Version;
  * https://wiki.gcube-system.org/gcube/Facet_Based_Resource_Model#Relation
  */
 @Abstract
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY, Relation.PROPAGATION_CONSTRAINT_PROPERTY })
+@JsonPropertyOrder({ IdentifiableElement.ID_PROPERTY, Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY, Relation.PROPAGATION_CONSTRAINT_PROPERTY })
 // @JsonDeserialize(as=RelationImpl.class) Do not uncomment to manage subclasses
 @TypeMetadata(name = Relation.NAME, description = "This is the base type for any Relation", version = Version.MINIMAL_VERSION_STRING)
 @Change(version = Version.MINIMAL_VERSION_STRING, description = Version.MINIMAL_VERSION_DESCRIPTION)