diff --git a/dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/collection/plugin/base/xml/base2oaf.transformationRule.xml b/dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/collection/plugin/base/xml/base2oaf.transformationRule.xml
index cee649805..201e5c363 100644
--- a/dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/collection/plugin/base/xml/base2oaf.transformationRule.xml
+++ b/dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/collection/plugin/base/xml/base2oaf.transformationRule.xml
@@ -340,7 +340,7 @@ base_dc:link (I used dc:identifier)
 									
 									<oaf:identifier identifierType="oai-original">
 										<xsl:value-of
-											select="//*[local-name() = 'about']/*[local-name() = 'provenance']//*[local-name() = 'originDescription' and not(./*[local-name() = 'originDescription'])]/*[local-name() = 'identifier']" />
+											select="//oai:header/oai:identifier" />
 									</oaf:identifier>
 									
 									<oaf:hostedBy>
diff --git a/dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/collection/plugin/base/xml/base2odf.transformationRule.xml b/dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/collection/plugin/base/xml/base2odf.transformationRule.xml
index 4565b81f5..ff03e9d59 100644
--- a/dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/collection/plugin/base/xml/base2odf.transformationRule.xml
+++ b/dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/collection/plugin/base/xml/base2odf.transformationRule.xml
@@ -82,8 +82,9 @@
 
 											<datacite:identifier alternateIdentifierType="oai-original">
 												<xsl:value-of
-													select="//*[local-name() = 'about']/*[local-name() = 'provenance']//*[local-name() = 'originDescription' and not(./*[local-name() = 'originDescription'])]/*[local-name() = 'identifier']" />
+													select="//oai:header/oai:identifier" />
 											</datacite:identifier>
+											
 										</datacite:alternateIdentifiers>
 
 										<datacite:relatedIdentifiers />
@@ -374,7 +375,7 @@
 
 									<oaf:identifier identifierType="oai-original">
 										<xsl:value-of
-											select="//*[local-name() = 'about']/*[local-name() = 'provenance']//*[local-name() = 'originDescription' and not(./*[local-name() = 'originDescription'])]/*[local-name() = 'identifier']" />
+											select="//oai:header/oai:identifier" />
 									</oaf:identifier>
 
 									<oaf:hostedBy>