Electronic Purchasing with Two Identities (Our U.S. vs Mexico Companies as Customers)

In our EBS 12.2.5 instance, we send electronic POs to a supplier that are created via a punchout process and transmitted using the XML Gateway in EBS.  Currently, we only place electronic orders to that supplier for our U.S. operating unit.

In the cXML file sent to the supplier, our identity as the customer is derived via header's From - Identity attribute.  That Identity value comes from a Site level system profile 'PO: cXML From Identity', so only one value can be set for the entire instance.  That profile cannot be set at the Operating Unit or Responsibility level.