3183768 - Purchase orders are failing to reach the supplier email, but can be seen in the supplier's Workbench

Purchase orders (POs) are failing to reach the supplier's email address, but can be seen in their Workbench online.

The PO status is Failed in the SAP Business Network. The supplier has their Routing Method set to Email in Settings > Electronic Order Routing.

Different error messages can be shown in this scenario:

• PO-11: Cannot deliver order. Terminal error code for PO status: FE-28: Cannot deliver email: Unknown Recipient
• PO-11: Cannot deliver order. Terminal error code for PO status: FE-30: Cannot deliver email: undeliverable
• PO-11: Cannot deliver order. Terminal error code for PO status: The state of document XXXXXXXXXXXXXXXXXXXXXXXXXX was changed to Failed after unsuccessful attempts to resend it.

PO-11, Cannot deliver order, Terminal error code for PO status, FE-28, Cannot deliver email, Unknown Recipient, PO-11, Cannot deliver order, Terminal error code for PO status, FE-30, Cannot deliver email, undeliverable, email order, email po, electronic order routing, routing method , KBA , SBN-AN-TX-POA , Transaction (Purchase Orders, Ship Notices & Goods Receipts) , Problem