---
article_id: KB0404683
article_type: Support Note
component_ids:
  - SBN-AN-TX-POA
component_descriptions:
  - SAP Business Network for Procurement & Supply Chain > Transaction Documents > Transaction (Purchase Orders, Ship Notices & Goods Receipts)
products:
  - SAP Business Network for Procurement and SAP Business Network for Supply Chain
personas:
  - Admin
  - Buyer
  - Supplier
language: en
created: 2026-03-04
updated: 2026-03-04
source: Knowledge Base
url: https://support.ariba.com/item/view/KB0404683
connect_url: https://support.ariba.com/item/view/KB0404683?min=1
sap_for_me_url: https://me.sap.com/notes/KB0404683
---

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

## Symptom

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 and 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.

## Resolution

If the supplier is expecting to receive their purchase orders via email, their **Electronic Routing Method** needs to be set to **Email**, a valid email needs to be configured, and the email server needs to allow emails from the domain @ariba.com.

See the articles below for specific guidance for each of the errors referred to above:

- [Error: "PO-11: Cannot deliver order. Terminal error code for PO status: FE-28" purchase order failure](https://support.ariba.com/item/view/180685)
- [PO failed with error: "FE-30: Cannot deliver email: undeliverable"](https://support.ariba.com/item/view/128830)
- [Error: "PO-11: Cannot deliver order. (...) Failed after unsuccessful attempts to resend it." when sending email PO to supplier](https://support.ariba.com/item/view/192400)

## See Also

If the supplier has their **Routing Method** set to [**cXML**](https://support.ariba.com/item/view/192454), **EDI** or **CIG**, different solutions will apply.

## Keywords

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