No part definition could be retrieved. The associated part definition has been removed from the catalog since this item's placement... - Intergraph Smart 3D - Administration

Intergraph Smart 3D Troubleshooting Reference

PPMProduct
Intergraph Smart 3D
PPMCategory_custom
Administration & Configuration
Version_S3D
12.1(2019)

Meaning: The catalog part was deleted and the Synchronize Model with Catalog command in Project Management was run. The feature occurrence is now on the To Do List because the par was not returned.

Recovery: Delete the feature, or modify the feature such that is uses a valid part.