3102040 - Concur Integration Fails After PI Upgrade to SAP NetWeaver 7.50 SP21

• Concur integration scenario is running in the system through Process Integration (PI) with REST Receiver adapter.
• After an update of SAP PI/PO system to release 7.50 Support Package 21, Concur integration begins to fail in the ECC system with errors.
• When detailed REST adapter trace is captured during issue reproduction, it can be observed that all PI/PO requests sent to Concur are failing with either HTTP 403 or HTTP 401 errors.

• SAP NetWeaver
• SAP Process Integration

Concur integration, SAP PI issue, HTTP 401 error, SAP_XIAF bug, Concur integration failure after SP21, SAP PI 7.50 SP21 HTTP error, SAP_XIAF patch issue, PI/PO HTTP 403 error, Concur integration fails after SAP PI 7.50 SP21 upgrade without latest patches, SAP_XIAF patch level 0 causes authentication failure in Concur integration, HTTP 401 and 403 errors due to incorrect encoding in SAP PI headers, SAP PI 7.50 SP21 white space encoding issue breaks Concur requests. , KBA , BC-XI-CON-RST , Rest Adapter , BNS-CON-SE-ERP , Concur ERP Integration , Known Error