My purchase order was marked as Failed on SAP Business Network. When checking the History tab of my Purchase Order (PO), it contains the Error: PO-11: Cannot deliver order. Terminal error code for PO status: FE-30: Cannot deliver email: could not be delivered.

SAP Business Network.

The error happens because your mail server is not accepting the email messages sent by SAP Business Network.

To resolve this error, verify that the email settings match the below requirements:

• Your mail server has the domain @ansmtp.ariba.com added to the allow list.
• All email addresses configured under Electronic Order Routing are correct and active. If you have a Custom Order Routing configured for specific customers, check the email addresses listed there as well.
• If PO has any attachments, check with your internal IT department if the file extensions are allowed by your mail server. If the toggle Include PDF document under Electronic Order Routing is enabled, SAP Business Network will include a PDF copy of the order.

Once the cause of the failure is resolved, you can resend failed orders.

For further reference about the routing options available on SAP Business Network, see Configuring Electronic Order Routing and Overriding Order Routing for a Customer.

For a list of common similar errors and their resolutions, see Purchase orders are failing to reach the supplier email, but can be seen in the supplier's Workbench.

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