Empty response when retrieving synchonous response-message from MQ-queue

We retrieve a synchronous message from SAP/GRC to XI and forward this to an external webservice via MQ. Our infrastructure doesnu2019t allow direct communication from XI to the external website. We need to put it on a MQ-queue which forwards the message to DataPower. DataPower (IBM) handles the actual webservice call. We use the sync/async bridge in the JMS-adapter to handle correlation between the request and response.

The problem is that when the JMS-adapter picks the response-message it is empty! This means that our interface-mapping is failing. When stopping the adapter we can analyze the payload and it looks fine at the MQ-queue. In runtime workbench I can see the following log:

2009-03-23 19:01:26 Success Message successfully received by messaging system. Profile: XI URL: http://d36sap79.corpusers.net:56200/MessagingSystem/receive/AFW/XI Credential (User): PIISUSER

2009-03-23 19:01:26 Success Using connection JMS_http://sap.com/xi/XI/System. Trying to put the message into the request queue.

2009-03-23 19:01:26 Success Message successfully put into the queue.

2009-03-23 19:01:26 Success The message was successfully retrieved from the request queue.

2009-03-23 19:01:26 Success The message status set to DLNG.

2009-03-23 19:01:26 Success Delivering to channel: Receiver_NFE_SRVSC_MQ

2009-03-23 19:01:26 Success MP: Entering module processor

2009-03-23 19:01:26 Success MP: Processing local module localejbs/AF_Modules/RequestOnewayBean

2009-03-23 19:01:26 Success ROB: entering RequestOnewayBean

2009-03-23 19:01:26 Success ROB: forwarding the request message

2009-03-23 19:01:26 Success ROB: leaving RequestOnewayBean

2009-03-23 19:01:26 Success MP: Processing local module localejbs/AF_Modules/MessageTransformBean

2009-03-23 19:01:26 Success Transform: using Transform.Class: com.sap.aii.messaging.adapter.XSLTConversion

2009-03-23 19:01:26 Success Transform: transforming the payload ...

2009-03-23 19:01:26 Success Transform: successfully transformed

2009-03-23 19:01:26 Success MP: Processing local module localejbs/SAP XI JMS Adapter/ConvertMessageToBinary

2009-03-23 19:01:26 Success MP: Processing local module localejbs/SAP XI JMS Adapter/SendBinarytoXIJMSService

2009-03-23 19:01:26 Error MP: Exception caught with cause com.sap.aii.af.ra.ms.api.RecoverableException

2009-03-23 19:01:26 Error Exception caught by adapter framework: null

2009-03-23 19:01:26 Error Delivery of the message to the application using connection JMS_http://sap.com/xi/XI/System failed, due to: com.sap.aii.af.ra.ms.api.RecoverableException. Setting message to status failed.

2009-03-23 19:01:26 Error The message status set to FAIL.

2009-03-23 19:01:26 Error Returning synchronous error message to calling application: com.sap.aii.af.ra.ms.api.RecoverableException.

Whats happening? Why is my responsemessage it empty?

Can somebody please help?

Kind regards

/Helé