Lots In P4312

 Hi All,

I have a question on P4312.

The scenario is as below.

We use lot control on items.

Some of the purchased item lots are returned to the vendor due to various reasons. The process of returning the lot to the vendor we reclass andassign a new lot # and the hold is on the new quarantined lot on this system..

Accidentally the vendors some times send back the exact same (original lot)  in a later shipment.

At the time of PO receipts, we want an hard error to show up when the same lot is received back in. Since the receiving person is some one sitting in the back office, he/she may not even know that the same lot was returned earlier.