I'm facing this issue. I made a PO for an item for 300 pieces and received all of them in a single product receipt transaction. But, the vendor when he sent the invoice, the quantity was only 200 pieces. I posted the invoice for 200 pieces by referring this product receipt. But, when the vendor sent the next invoice for the balance 100 pieces, I was not able to find this product receipt for matching...
Thanks in advance.