Issue with receipt associated with a credit voucher

Hi,

We are on PeopleSoft 9.2. The PO line(distribute by qty) has a qty of 141. A credit voucher  for that line was created for -2 qty. However, while linking the associated receiver to the credit voucher, the qty(to match) was mistakenly put as 2 and not -2. This credit voucher is now matched, paid and posted. There is a message that sum of receiver line qty is not equal to voucher line qty(no error message).  Because of the incorrect qty on the receipt (with the credit voucher), the qty is not put back to the PO. Now, the user is