Axis adapter receiver handle fault message

Question

Hi
We have a Sync interface which makes a Proxy call from ECC to PI 7.3 and then PI makes Soap(Axis) Sync call to Web sevice. We are having issues when handling SOAP 1.2 fault message.
Below is the actual fault response from Webserver:
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope">
   <env:Header/>
   <env:Body>
      <env:Fault>
         <env:Code>
            <env:Value>env:Receiver</env:Value>
         </env:Code>
         <env:Reason>
            <env:Text xml:lang="en">FaultMsg</env:Text>
         </env:Reason>
         <env:Detail>
            <ns2:servicefault xmlns:ns2="https://hostname.de/webservice/0400-0005">
            </ns2:servicefault>
         </env:Detail>
      </env:Fault>
   </env:Body>
</env:Envelope>
But PI receives this response like system error:
  <?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
- <!--  Inbound Message
  -->
- <SAP:Error SOAP:mustUnderstand="1" xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/">
  <SAP:Category>XIAdapterFramework</SAP:Category>
  <SAP:Code area="MESSAGE">GENERAL</SAP:Code>
  <SAP:P1 />
  <SAP:P2 />
  <SAP:P3 />
  <SAP:P4 />
  <SAP:AdditionalText>com.sap.engine.interfaces.messaging.api.exception.MessagingException: FaultMsg</SAP:AdditionalText>
  <SAP:Stack />
  <SAP:Retry>M</SAP:Retry>
  </SAP:Error>
I checked this way http://scn.sap.com/thread/1675917 but it doesn't fit for Axis adapter.
Please let me for any clues how to handle this fault response.
Regards, Dzmitry

Answer 1

Hi,
I'm working with Dzmitry on the issue since last week. After analyzing the implementation and checking some SAP notes I came to the following conclusion:
According to note 856597 the fault behavior of axis adapter is  as follows:
" A: The receiver adapter expects a SOAP message as response. For
synchrnous calls, a successful response should be returned with
HTTP 200. In this case, the content of the SOAP body will be
returned to the caller as the response payload. When some error
occurs, the SOAP message may contain the SOAP fault element. In
this case, when the fault detail element is not empty, its
content will be returned as the fault payload in an application
error message. For others, a system error message will be
returned to the caller."
The example shows a SOAP 1.1 fault message with a "detail" node being mapped to an application fault.
As we are using SOAP 1.2 the namespace as well as structure of the fault defers. I assume that the module responsible for the transformation from AXIS message to XI message within the module chain does not recognize the detail node on out soap 1.2 fault.
Therefore the solution would be to insert a custom AXIS handler before com.sap.aii.axis.xi.XI30OutboundHandle mapping the soap 1.2 fault to a soap 1.1 fault.
Is there something like a short how to on how to implement Axis handler and how to deploy it. Sap help only says to package it into sda file....
Thanks a lot  in advance!!!
BR,
Eugen