Diagnosis
Plant &V2& is not assigned to MRP area &V1&. If you want to assign adifferent plant to the force element, you must first delete the MRParea.
You must delete an MRP area using transaction/ISDFPS/BERID_DELE. When doing so, ensure that the force element towhich the MRP area is assigned is not being processed in processingmode in the Structures workbench.