return to vendor for non stock item

Hi All,

We have a P4310 version for creating return PO to vendor and set line type = C in processing option.

We create a PO for returning an item with line type B.

When we try to receipt the PO, an error appear :

( Negative quantity on hand! 

A form level error has occurred.

CAUSE. The receipt of this purchase order will cause the new quantity on-hand to go negative.

RESOLUTION. This is an error message. Press Cancel to abort the processing of the new receipt. To avoid this error in the future, do not process receipts that will bring on-hand inventory to a negative value. )