3178235 - Error: "The Supplier: [supplier ANID] and the Buyer: [buyer ANID]associated Connection is not configured or saved.."

Purchase Orders are failing in production with the below error within the SAP Integration Suite, managed gateway for spend management and SAP Business Network:

The Supplier:[supplier ANID] and the Buyer:[buyer ANID]associated Connection is not configured or saved.. Suggested Action : Configure Connection information at Managed Gateway for Spend&Network portal -> Project -> Basic Information -> Connections or Managed Gateway for Spend&Network Portal -> My Configurations -> Connections. For instructions refer to Managed Gateway for Spend&Network Portal -> Resources -> Implementation Guides -> User Guide -> How to configure SAP Business Network connection.For further assistance, please contact Managed Gateway for Spend&Network Support with Error Code : CIG-PLT-00641

associated, Connection, configured, saved,CIG,Cloud, Integration, Gateway , KBA , BNS-ARI-CI-AN , Managed Gateway for Business Network , Problem