"Part xxxx is an enforced piece part.
Components cannot be added to it."
Go to Solution.
'Enforced Piece Part' makes part as piece part so that other parts/components can not be added to it. Generally it is used for the standard parts like fasteners.
File > Utilities > Enforced Piece Part.
Clear the check 'Enforce as Piece Part' in the dialog 'Piece Part Enforcement' and OK. Now you can add component/part to it.
Regards,Ganesh#IngenuityisNX | NX Continuous Release F.A.Q | NX12.0.2 Measurement Commands Consolidation