Purchase order is failing in SAP Business Network, not reaching the supplier integrated system. When we see the History tab for the PO in SAP Business Network (buyer), we see the error below:

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.

The supplier is able to view the PO in their Inbox, but it is marked as Failed. In the PO History tab in SAP Business Network (supplier), they can see the error below for the order:

PO-7: Received cXML response indicating a temporary error.

The supplier needs to review internally with their IT and integration teams to learn why they are sending a error response code to Ariba. For your POs not to be marked as Failed in SAP Business Network, the supplier's integrated system need to send back a 200 status code, which means success.

Once the issue has been addressed, the supplier can resend the failed orders from their SAP Business Network account.

This error means that the supplier's integrated system responded with an error code to Ariba posting.

See PO fails in the SAP Business Network with error "PO-7: Received cXML response indicating a temporary error" for instructions for suppliers on this integration error.

If the supplier receives their orders via email instead, refer to Error: "PO-11: Cannot deliver order. (...) Failed after unsuccessful attempts to resend it." when sending email PO to supplier.

SAP Business Network for Procurement & Supply Chain > Transaction Documents
SAP Business Network for Procurement & Supply Chain > Transaction Documents > Transaction (Purchase Orders, Ship Notices & Goods Receipts)