3729441 - Why did the Goods Receipt fail in SAP Managed Gateway buyer account with "Error:Cannot find the referenced PO with order id Please contact support with the Error Reference Number: ANERR" ?

BusinessNetwork response is :"Conflict" and ErrorCode:"409" and ErrorResponse:"Error:Cannot find the referenced PO with order id: XXXX Please contact support with the Error Reference Number: ANERR-XXXX for more details. Suggested Action : Document failed in Business Network.ErrorCode:CIG-PLT-00644.Please review the Support Note 189049 (https://support.ariba.com/item/view/189049) for solution

Goods Receipt (GR) sent from the Buying ERP system to SAP Managed Gateway failed with the above error.

goods receipt, purchase order,, payload id, multiple purchase orders, order confirmation, goods receipt file, purchase order linkage, integration, transaction tracker, data inconsistency. , KBA , SBN-AN-TX-POA , Transaction (Purchase Orders, Ship Notices & Goods Receipts) , BNS-ARI-CI-AN-GR , Managed Gateway for Business Network - Receipt , Problem