How to receive quantity more than ordered quantity against subcon PO

Hi All,

Can we receive extra quantity against subcon PO without adjusting components provided? The scenario is as below

Main Material Quantity in Subcon PO : 20

Components required & provided Qty : 20

Main material received quantity is 22. So now if over del tolerance given in PO and GRN posted with 22 then components also gets consumed with quantity 22, which is not desirable in this case. User can update the component qty manually in MIGO, but there is always a chance for mistake..

So to avoid manual intervention, is there any way that the components qty can not be changed, during grn , even if main material qty is more than or less than ordered qty???

Please help.