I have a client who is having problems with their service purchase orders. When someone copies an approved service PO to an invoice/GRPO and they change the GL account on the line level the document loses the link to the PO. This then results in the PO being available to be copied again in the future. This could result in fraud because users can copy an order multiple times using the same approved order for many invoices.
Is there a way to stop this from being allowed in the system? If so, how?