Supplier Documents
Order confirmations, ship notices (ASN), invoices and credit memos suppliers send back after a PO.
Point a supplier at https://punchout-tool-suite.vercel.app/cxml/documents.
Nothing received yet. Send a PO with the cXML Order tester,
then confirm, ship and invoice it from the supplier (in Punchout Supply: Punchout › Procure to Pay).