A ProfilePartGeneration_AE does not have a related profile system.
A profile part generation active entity (AE) does not have a related profile system: Missing the PartGeneration_OPER relationship to (ProfileSystem, BeamSystem, ProfileEdgeReinforcement) for ProfilePartGeneration_AE.
What You Should Do
Ask your database administrator to back up the model.
Supply all information possible that may have led to this situation, and submit this information along with the backup to Smart 3D Support.
Delete the object using one of the following methods:
Select the object in the Workspace Explorer, and delete it.
Run the Clean Database custom command to delete the object.