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2548392 - 401 Unauthorized response when connecting BTP with backend system using Basic Authentication

Symptom

  • There is a connection between SAP BTP (Cloud Integration) and an SAP NetWeaver AS ABAP system through SAP Cloud Connector (SCC) via HTTP/HTTPS.
  • The authentication in the backend system is performed using Basic Authentication (user & password).
  • A request sent to the backend returns with HTTP Status 401.
  • In case of CPI, the log shows the following error:

org.apache.cxf.interceptor.Fault: Could not send Message., cause: org.apache.cxf.transport.http.HTTPException: HTTP response '401: Unauthorized' when communicating with [backend URL]


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Environment

  • SAP BTP
  • SAP Cloud Connector
  • SAP NetWeaver Application Server ABAP

Product

SAP Connectivity service all versions

Keywords

Hana Cloud Integration, hci, cpi, wrong credentials, logon procedure, client certificate, authentication, SSC, ICM, ICF, SICF, SAML, 2.0, icm/HTTPS/verify_client, STRUST, SSL Server standard view, RZ11, RZ10, TLS trace, certificate request, no suitable certificate found , KBA , scp , sap cloud platform , BC-MID-ICF , Internet Communication Framework , BC-CST-IC , Internet Communication Manager , BC-SEC-LGN , Authentication , BC-NEO-CON , Neo to On-premise Connectivity service , BC-MID-SCC , SAP Cloud Connector On-Demand/On-Premise Connectivity , Problem

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