PO GRN tolerance on Balance quantity

Dear All,

I have a query. Is it possible to have overdelivery tolerance% in Balance quantity. In standard SAP, tolerance in on total PO quantity.

If i have PO of 100. over delivery can be 110 if 10% is tolerance. if 50 items already received. Then at the time of second GRN it should allow 55 not 110 as per total PO quantity.

Please tell me if this is possible.