1970376 - Messages fail in PI SOAP Receiver Adapter

• Messages processing in the SOAP Receiver Adapter exhibit the following symptoms

1. Messages fail with the following error
   "com.sap.engine.interfaces.messaging.api.exception.ConfigException: Exception while Setting the Acknowledgement Endpoint for AE"
                           
2. Messages go into waiting status with the error below although the message has been successfully delivered
   "Transmitting the message to endpoint <local> using connection SOAP_http://sap.com/xi/XI/System failed, due to:
   com.sap.engine.interfaces.messaging.api.exception.MessagingException: Error encountered while executing mapping: com.sap.aii.af.service.mapping.MappingException: Unexpected exception caught while executing mapping:
   com.sap.aii.adapter.xi.routing.RoutingException: Unable to retrieve interface determination: No interface determination set in lookup context"
                  
   Subsequent retries of the message can also fail with the following error as the message has aready been delivered
   "SOAP: Call failed: com.sap.aii.af.sdk.xi.srt.BubbleException: System Error Received. HTTP Status Code = 200: However System Error received
   payload ErrorCode = DUPLICATE_DETECTED ErrorCategory = XIProtocol"
                                     
3. Response message is generated with the following error
   "http://sap.com/xi/XI/System failed, due to: com.sap.engine.interfaces.messaging.api.exception.MessagingException: NO_BACK_SYSTEM_IN_HOPLIST"
   "Received XI System Error. ErrorCode: NO_BACK_SYSTEM_IN_HOPLIST ErrorText: null ErrorStack: Legacy system to which acknowledgment message is to be sent is missing in hoplist (with wasread=false)"

• SAP NetWeaver Process Integration 7.1
• SAP enhancement package 1 for SAP NetWeaver Process Integration 7.1
• SAP NetWeaver 7.3
• SAP enhancement package 1 for SAP NetWeaver 7.3
• SAP NetWeaver 7.4

Process Integration 7.10, PI 7.10, Process Integration 7.11, PI 7.11, Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31, Process Orchestration 7.4, PI 7.4, PO 7.4, XI, AEX, Advanced Adapter Engine, Adapter Framework, Configuration and Monitoring Home, Process Orchestration, Message Monitor, response, request, Runtime Workbench , KBA , BC-XI-CON-SOP , SOAP Adapter , BC-XI-CON-AFW , J2EE Adapter Framework , Problem