After I make a subcontracting PO I'm transferring, with Movement type 541, the "son's" materials to subcontractor stock. While doing it I'm putting the PO number in transaction MB1B in the purchase order field. Is there a way that when the quntity from the components, reach to the requested quantity of the father in the PO I will have a warning or error message.
for example: to make 1 unit of material A, I need to send to the subcontractor 10 units of material B.
In MB1B, when i reach to 10 units that was transferred to subcontractor i will have a message.