SOAP Receiver Adapter Error in XI RWB - java.lang.NULLPointerException

Question

Hi,
We have a asynchronous scenario in SAP-XI, where we are sending the PO data from SRM to third party (Hubspan / TNT). Proxy is being used at Sender side and SOAP Adapter is used for Receiver Communication Channel.
u2022SRM is sending around 1000 messages through background job and around 995 or 996 messages are being processed successfully and showing the proper XML payload as well in RWB. But 4-5 messages are getting failed in XI RWB for u2018java.lang.NullPointerExceptionu2019. For these failed messages we are not able to see the XML payload as well in XI RWB while these messages are showing successful status in MONI in SRM and XI and we are able to see the payload as well in MONI. The webservice is restarting and trying to send the payload three times in RWB, but it is getting the same Nullexception error.
04.11.2011 16:45:49.715 Success Delivering to channel: CC_B2B_HUBSPAN_RCV
04.11.2011 16:45:49.715 Success MP: Entering module processor
04.11.2011 16:45:49.715 Success MP: Processing local module localejbs/sap.com/com.sap.aii.af.soapadapter/XISOAPAdapterBean
04.11.2011 16:45:49.716 Success SOAP: request message entering the adapter with user J2EE_GUEST
04.11.2011 16:45:49.716 Success SOAP: Target url: https://connect.hubspan.net/mh/server/tp=NMHG/ssid=DAA6F0E9AC1000BD03A41B363BBFD676
04.11.2011 16:45:49.999 Error SOAP: call failed: java.lang.NullPointerException
04.11.2011 16:45:49.999 Success SOAP: sending a delivery error ack ...
04.11.2011 16:45:49.999 Success SOAP: sent a delivery error ack
04.11.2011 16:45:49.999 Error SOAP: error occured: com.sap.aii.af.ra.ms.api.RecoverableException: java.lang.NullPointerException
04.11.2011 16:45:49.999 Error MP: Exception caught with cause com.sap.aii.af.ra.ms.api.RecoverableException: java.lang.NullPointerException
04.11.2011 16:45:50.000 Error Exception caught by adapter framework: null
04.11.2011 16:45:50.022 Error Delivery of the message to the application using connection SOAP_http://sap.com/xi/XI/System failed, due to: com.sap.aii.af.ra.ms.api.RecoverableException: java.lang.NullPointerException.
04.11.2011 16:45:50.037 Success The message status set to WAIT.
u2022If we are resending the failed message from XI RWB, it is getting failed again with the same error. On the other hand if we are initiating the message again from SRM to Hubspan for the same PO, it is getting processed successfully in RWB but still not showing XML payload in RWB.
u2022If we are getting the payload from XI MONI for the failed message and doing a test with component monitoring in RWB, it is working fine.
Please help me to solve this issue.
Thanks
Sumit

Answer 1

Hi Sumit,
From my experience, when you transfer  SAP POs through PI to external webservice, there should be some validation happens at the webservice layer of the target system before the web service passes the original information to  their application layer. The validation can be anything like checking the Vendor address, Checking the correctness of the order ...etc etc . So i would suggest to ask your external web service folks to check if they have any validation in place before they pass the data to their application layer.
As you said only some POs/XMLs are failing, i strongly feel that this could be the issue.
Please note if you receive response code other than 200 from webservice, SOAP adapter treats that as error and send the same message back to AE.
Normally webservices won't send 200 code for any validation error
PS: you can still try to use XMLSpy to post the failed message to the web service to know the exact cause.