diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/AbstractMdRecordToOafMapper.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/AbstractMdRecordToOafMapper.java
index b37e6a755..bca6a2aae 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/AbstractMdRecordToOafMapper.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/AbstractMdRecordToOafMapper.java
@@ -29,7 +29,7 @@ public abstract class AbstractMdRecordToOafMapper {
 
 	protected final VocabularyGroup vocs;
 
-	protected static final UrlValidator URL_VALIDATOR = UrlValidator.getInstance();
+	protected static final UrlValidator URL_VALIDATOR = new UrlValidator(UrlValidator.ALLOW_2_SLASHES);
 
 	private final boolean invisible;
 
diff --git a/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/resolution/oozie_app/config-default.xml b/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/resolution/oozie_app/config-default.xml
index 6fb2a1253..86847ed46 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/resolution/oozie_app/config-default.xml
+++ b/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/resolution/oozie_app/config-default.xml
@@ -1,4 +1,12 @@
 <configuration>
+    <property>
+        <name>jobTracker</name>
+        <value>yarnRM</value>
+    </property>
+    <property>
+        <name>nameNode</name>
+        <value>hdfs://nameservice1</value>
+    </property>
     <property>
         <name>oozie.use.system.libpath</name>
         <value>true</value>
@@ -7,4 +15,28 @@
         <name>oozie.action.sharelib.for.spark</name>
         <value>spark2</value>
     </property>
+    <property>
+        <name>hive_metastore_uris</name>
+        <value>thrift://iis-cdh5-test-m3.ocean.icm.edu.pl:9083</value>
+    </property>
+    <property>
+        <name>spark2YarnHistoryServerAddress</name>
+        <value>http://iis-cdh5-test-gw.ocean.icm.edu.pl:18089</value>
+    </property>
+    <property>
+        <name>spark2ExtraListeners</name>
+        <value>com.cloudera.spark.lineage.NavigatorAppListener</value>
+    </property>
+    <property>
+        <name>spark2SqlQueryExecutionListeners</name>
+        <value>com.cloudera.spark.lineage.NavigatorQueryListener</value>
+    </property>
+    <property>
+        <name>sparkExecutorNumber</name>
+        <value>4</value>
+    </property>
+    <property>
+        <name>spark2EventLogDir</name>
+        <value>/user/spark/spark2ApplicationHistory</value>
+    </property>
 </configuration>
\ No newline at end of file
diff --git a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java
index b506d3a62..da7a890ee 100644
--- a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java
+++ b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java
@@ -797,6 +797,20 @@ class MappersTest {
 		assertFalse(p_cleaned.getTitle().isEmpty());
 	}
 
+	@Test
+	void test_instance_url_validation() throws IOException {
+		final String xml = IOUtils.toString(Objects.requireNonNull(getClass().getResourceAsStream("idus_sevilla.xml")));
+		final List<Oaf> list = new OafToOafMapper(vocs, false, true).processMdRecord(xml);
+
+		final Publication p = (Publication) list.get(0);
+
+		assertNotNull(p.getInstance());
+		assertFalse(p.getInstance().isEmpty());
+		assertNotNull(p.getInstance().get(0).getUrl());
+		assertFalse(p.getInstance().get(0).getUrl().isEmpty());
+		assertEquals("https://idus.us.es/handle//11441/118940", p.getInstance().get(0).getUrl().get(0));
+	}
+
 	@Test
 	void testZenodo() throws IOException, DocumentException {
 		final String xml = IOUtils.toString(Objects.requireNonNull(getClass().getResourceAsStream("odf_zenodo.xml")));
diff --git a/dhp-workflows/dhp-graph-mapper/src/test/resources/eu/dnetlib/dhp/oa/graph/raw/idus_sevilla.xml b/dhp-workflows/dhp-graph-mapper/src/test/resources/eu/dnetlib/dhp/oa/graph/raw/idus_sevilla.xml
new file mode 100644
index 000000000..1bfa3c7c3
--- /dev/null
+++ b/dhp-workflows/dhp-graph-mapper/src/test/resources/eu/dnetlib/dhp/oa/graph/raw/idus_sevilla.xml
@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<record xmlns:dc="http://purl.org/dc/elements/1.1/"
+        xmlns:dr="http://www.driver-repository.eu/namespace/dr"
+        xmlns:dri="http://www.driver-repository.eu/namespace/dri"
+        xmlns:oaf="http://namespace.openaire.eu/oaf"
+        xmlns:oai="http://www.openarchives.org/OAI/2.0/"
+        xmlns:prov="http://www.openarchives.org/OAI/2.0/provenance"
+        xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <header xmlns="http://namespace.openaire.eu/">
+        <dri:objIdentifier>od______3272::6a4d00217a024a46ce9697ce98b13c2a</dri:objIdentifier>
+        <dri:recordIdentifier>oai:idus.us.es:11441/118940</dri:recordIdentifier>
+        <dri:dateOfCollection/>
+        <dri:mdFormat/>
+        <dri:mdFormatInterpretation/>
+        <dri:repositoryId/>
+        <dr:objectIdentifier/>
+        <dr:dateOfCollection>2021-08-20T12:32:32.826Z</dr:dateOfCollection>
+        <dr:dateOfTransformation>2023-07-04T15:47:55.397Z</dr:dateOfTransformation>
+        <oaf:datasourceprefix>od______3272</oaf:datasourceprefix>
+    </header>
+    <metadata xmlns="http://namespace.openaire.eu/">
+        <dc:title>El museo pictorico y escala optica : tomo I : theorica de la pintura en que se describe su origen ... y se aprueban con demonstraciomes mathematicas y filosoficas, sus mas radicales fundamentos</dc:title>
+        <dc:creator>Palomino de Castro y Velasco, Antonio, 1653-1726</dc:creator>
+        <dc:contributor>Rovira y Brocandel, Hipólito, 1693-1765</dc:contributor>
+        <dc:contributor>Palomino de Castro y Velasco, Antonio, 1653-1726</dc:contributor>
+        <dc:date>2021-08-12T08:59:53Z</dc:date>
+        <dc:date>1715</dc:date>
+        <dc:description>A 042(a)/063</dc:description>
+        <dc:format>application/pdf</dc:format>
+        <dc:identifier>https://idus.us.es/handle//11441/118940</dc:identifier>
+        <dc:language>spa</dc:language>
+        <dc:publisher>En Madrid : por Lucas Antonio de Bedmar ... : vendese en casa de Don Joseph de Villar y Villanueva, 1715</dc:publisher>
+        <dc:type>info:eu-repo/semantics/book</dc:type>
+        <dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
+        <dr:CobjCategory type="publication">0002</dr:CobjCategory>
+        <oaf:dateAccepted>1715-01-01</oaf:dateAccepted>
+        <oaf:embargoenddate/>
+        <oaf:collectedDatasourceid>opendoar____::3272</oaf:collectedDatasourceid>
+        <oaf:accessrights>OPEN</oaf:accessrights>
+        <oaf:hostedBy id="opendoar____::3272" name="idUS. Depósito de Investigación de la Universidad de Sevilla."/>
+        <oaf:collectedFrom id="opendoar____::3272" name="idUS. Depósito de Investigación de la Universidad de Sevilla."/>
+        <oaf:identifier identifierType="landingPage">https://idus.us.es/handle//11441/118940</oaf:identifier>
+        <oaf:journal eissn="" ep="" iss="" issn="" sp="" vol=""/>
+        <oaf:license>http://creativecommons.org/licenses/by-nc-nd/4.0/</oaf:license>
+    </metadata>
+    <about>
+        <provenance xmlns="http://www.openarchives.org/OAI/2.0/provenance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/provenance http://www.openarchives.org/OAI/2.0/provenance.xsd">
+            <originDescription altered="true" harvestDate="2021-08-20T12:32:32.826Z">
+                <baseURL>http%3A%2F%2Fidus.us.es%2Foai%2Fdriver</baseURL>
+                <identifier>oai:idus.us.es:11441/118940</identifier>
+                <datestamp>2021-08-12T08:59:54Z</datestamp>
+                <metadataNamespace>http://www.openarchives.org/OAI/2.0/oai_dc/</metadataNamespace>
+            </originDescription>
+        </provenance>
+        <oaf:datainfo>
+            <oaf:inferred>false</oaf:inferred>
+            <oaf:deletedbyinference>false</oaf:deletedbyinference>
+            <oaf:trust>0.9</oaf:trust>
+            <oaf:inferenceprovenance/>
+            <oaf:provenanceaction classid="sysimport:crosswalk:repository"
+                                  classname="sysimport:crosswalk:repository"
+                                  schemeid="dnet:provenanceActions" schemename="dnet:provenanceActions"/>
+        </oaf:datainfo>
+    </about>
+</record>
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 9cd82a343..f361a266c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -888,7 +888,7 @@
 		<mockito-core.version>3.3.3</mockito-core.version>
 		<mongodb.driver.version>3.4.2</mongodb.driver.version>
 		<vtd.version>[2.12,3.0)</vtd.version>
-		<dhp-schemas.version>[3.17.1]</dhp-schemas.version>
+		<dhp-schemas.version>[3.17.2]</dhp-schemas.version>
 		<dnet-actionmanager-api.version>[4.0.3]</dnet-actionmanager-api.version>
 		<dnet-actionmanager-common.version>[6.0.5]</dnet-actionmanager-common.version>
 		<dnet-openaire-broker-common.version>[3.1.6]</dnet-openaire-broker-common.version>