The triple using the property dct:source in the rdfxml should have been assigned an attribute value in the DataCite metadata; specifically: relatedIdentifiers/relatedIdentifier/@relationType="isDerivedFrom"; instead, it was assigned the attribute value relatedIdentifiers/relatedIdentifier/@relationType="isSourceOf". This happened for all 008 vocabularies. The description would need to be repaired in DataCite.
The triple using the property dct:source in the rdfxml should have been assigned an attribute value in the DataCite metadata; specifically: relatedIdentifiers/relatedIdentifier/@relationType="isDerivedFrom"; instead, it was assigned the attribute value relatedIdentifiers/relatedIdentifier/@relationType="isSourceOf". This happened for all 008 vocabularies. The description would need to be repaired in DataCite.