As I know I can not create a PO in company A, but was assigned to a WBS maintained in company code B. The system will check if the WBS getting the same company code with the PO, and pop up the error message if the company code was differect.
But seems the project stock could exists in a plant but assign to WBS was maintained with different company code. For example, A material stock was in plant A assigned to company code A, and it is also assigned to WBS belong to company code B.
Any one know it is correct?