---
article_id: KB0404656
article_type: Support Note
component_ids:
  - SBN-AN-TX
  - SBN-AN-TX-POA
component_descriptions:
  - 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)
products:
  - SAP Business Network for Procurement and SAP Business Network for Supply Chain
personas:
  - Buyer
language: en
created: 2020-11-17
updated: 2024-02-27
source: Knowledge Base
url: https://support.ariba.com/item/view/KB0404656
connect_url: https://support.ariba.com/item/view/KB0404656?min=1
sap_for_me_url: https://me.sap.com/notes/KB0404656
---

# Error: "PO-11: Cannot deliver order. Terminal error code for PO status: Not Acceptable, Error or Fatal Error." when sending Purchase Order (PO) to integrated supplier.

## Resolution

**Issue**

Purchase Order (PO) is failing in SAP Business Network, not reaching the integrated supplier 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: Not Acceptable, Error or Fatal Error

Supplier can view the error below in PO **History** tab in SAP Business Network (supplier):

PO-8: Received cXML response 4xx indicating an error.

**Resolution**

Your supplier will need to investigate why their system is sending back an unsuccessful response instead of a successful response when the order is routed to their specified URL via cXML integration. If the supplier system responds with a code other than a successful 200, the PO will be marked as **Failed** in SAP Business Network.

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

**Cause**

The supplier integrated system responded to SAP Business Network with a 4xx ([400, 412 or other error code](https://support.ariba.com/item/view/188136)) status when receiving the PO. This response code causes the PO to be marked as **Failed**.

**Additional Information**

Refer to [A purchase order fails with Error: "PO-9: Invalid cXML response"](https://support.ariba.com/item/view/144927) for an example of a valid 200 response.

## Keywords

po, failed po, po-11, Cannot deliver order, PO-11: Cannot deliver order, Terminal error code for PO status: Not Acceptable, integrated supplier, 400 response, 400 status code