Thanks for the reply.The issue is that we are trying to update a taxonomy term "programId" programatically using 'iwextattr -s'. This is successful and using 'iwextattr -l' we are able to see the attribute being set. The problem is that when trying to tag the file in Metatagger after setting the attribute using 'iwextattr -s', the Program field is empty. We have found that it is only when we manually update the subjectMetadata field that we are able to see the modifications show up in Metatagger.