RFC Lookup Fails

Question

I have an integration scenario that features an RFC lookup.  This integration scenario works great in our development environment, but fails at runtime in our QA environment.  The mapping program executes correctly in the Integration Builder debugging tools - but not at runtime.
The parameter mappings are correct in both the DEV & QA environments.
I've refreshed the cache in both SXI_CACHE and performed a CPA Cache Refresh
SXMB_MONI reports the following error
  <SAP:Category>Application</SAP:Category>
  <SAP:Code area="MAPPING">RUNTIME_EXCEPTION</SAP:Code>
  <SAP:P1>Thrown: java.lang.NullPointerException: at com.s</SAP:P1>
  <SAP:P2>ap.guid.GUID.parseHexGUID(GUID.java:1015) at com.</SAP:P2>
  <SAP:P3>sap.guid.GUIDGenerator.parseHexGUID(GUIDGenerator.</SAP:P3>
  <SAP:P4>java:111) at com.sap.aii.utilxi.misc.api.GUIDFac~</SAP:P4>
  <SAP:AdditionalText />
  <SAP:Stack>Runtime exception occurred during mapping</SAP:Stack>
  <SAP:Retry>M</SAP:Retry>
I've done searches here on SDN and found similar scenarios that broke down into either cache problems or as overlooked parameter mapping.  Neither of those seems to be my problem.
Is there anything I've overlooked?
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Edited by: Rob Burbank on Jan 13, 2011 4:20 PM

Answer 1

Could you verify if the configuration in the Directory (interface determination etc) is complete?
Yes, the deployment configuration is correct and the interface determination step correctly uses parameter mapping to pass a reference to the communication channel.
Check your rfc communication channel works
Yes, I can prove that the RFC communication channel works.  I can start the Enterprise Services Builder and test my mapping program.  In the parameters tab of the test page, I select the RFC communication channel.  All of those test work correctly.  My RFC executes and I'm getting the correct results.
That's the frustrating part - it tests correctly in the QA Ent Serv builder, but fails when deployed.
can you check in channel monitoring whether the channel used for RFC lookup is green and it has processed the Message which was sent at runtime.
In runtime workbench, I can see that the RFC comm channel is green.  If I drill down into the comm channel, I can see the processing details for the message I just tested in Ent Serv Builder. 
If I restart a failed message from SXMB_MONI - and then refresh the communication channel details, I do NOT see activity on the communication channel.  So that leads me to believe that failure occurs prior to making the RFC call - and isn' related to some sort of bad response from the communication channel.
Edited by: Terry Riedel on Jan 14, 2011 12:02 PM