We have a vendor that has been sending us Credit/Debit Memos and Returns via EDI. They come in as an 810, but error out and land in EDI Work. The error is that the PO number being referenced isn't valid because the number they use does not tie back to a PO in our system. I have requested that they turn these transactions types off of EDI and email them to our AP team instead. We should only be receiving EDI invoices for the PO's we've submitted through EDI. Has anyone else experienced this and what actions have you taken? Is there a mapping entry I could make to the substitution table to get these to work in EDI? Thank you.