Hi Bob, This is Liang from tacker team, in our patch: Implement SOL001 features to MgmtDriver (Ib4ad3eb9) · Gerrit Code Review (opendev.org) <https://review.opendev.org/c/openstack/tacker/+/768091>, we tried to implement in order to allow user use their script by defining 'interface' in vnfd file: …/vnflcm_driver.py · Gerrit Code Review (opendev.org) <https://review.opendev.org/c/openstack/tacker/+/768091/12/tacker/vnflcm/vnflcm_driver.py#408> in the function above, changes in Support "Implementation" definition as Artifact Name (I192d3649) · Gerrit Code Review (opendev.org) <https://review.opendev.org/c/openstack/tosca-parser/+/747516> , is needed for our implementation, may I ask you to help us push review for an early merge of this patch, appreciate for that! Best regards Liang Lu