Approved Item Substitution and PO Auto-Change loaded from EDI POA

Hello All,

Could you please share or provide feedback about processing EDI POA and PO-Change for Approved Inventory Item Substitution.

We use a manual approved spreadsheet list of items substitutes in collaboration with the supplier. At the time of the order, requester/buyer doesn't know if the item is in shortage. The supplier will ship a substitute item. As we don't consume yet the POA, the buyer will manually update the PO lines matching the substitute information.

Thank you very much. I look forward to any guidance.

P.S: we are in PS 9.2 Image 47/PT 8.59