JDE :Version XE, Purchase Order Last status is 999(completed) and next status is 400(Record Purchase

Hi everyone ,

I have a purchase order that was closed on 2015/01/05 as shows the GL date, however, on 2015/05/27 (5 months later) a user ran this order with P43214 (Reverse Purchase Order Receipt) and the status of the order has now changed from 400-999 to 999-400. I tried simulating the same scenario on different orders but it was unsuccessful as they return "Reverse Receipt not allowed".  In what possible case P43214 can reverse the receipt of a completed Purchase order?

Your help is very much appreciated.

Regards