There are few basic pre-requirements that must be fulfilled for being able to perform an Assign Drawing(s) Label Workflow.

CAD Documents set as Root Objects must:

- Be of type "Drawing".

- Be in "Approved" or "Released" lifecycle state.

- Have a Design Code assigned through the parent Part.

Additionally, the initiator of the workflow must hold the "Equipment Owner" role in all the Design Codes set on the Root Objects.

Complete documentation: Assign Drawing(s) Label Workflow FAQ