Handling Soap Fault Response.

Question

Hi All,
I have a Proxy to SOAP scenario. 
While testing from SoapUI --
I am getting response for the valid input and for the invalid input the response is below.
In the scenario through SAP PI , the valid input given from the HTTP client is getting a valid response and the scenario is running fine.
But while checking the negative test, giving the invalid input, it is ending in a System error in PI.
We have to handle this and send the error back to the source system.
FAULT RESPONSE IN SoapUI :
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <soap:Body>
      <soap:Fault>
         <faultcode>soap:Client</faultcode>
         <faultstring>System.Web.Services.Protocols.SoapException: Server was unable to read request. ---> System.InvalidOperationException: There is an error in XML document (6, 45). ---> System.InvalidOperationException: Instance validation error: 'AD' is not a valid value for Currency.
   at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read1_Currency(String s)
   at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read2_ConversionRate()
   at Microsoft.Xml.Serialization.GeneratedAssembly.ArrayOfObjectSerializer.Deserialize(XmlSerializationReader reader)
   at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
   --- End of inner exception stack trace ---
   at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
   at System.Web.Services.Protocols.SoapServerProtocol.ReadParameters()
   --- End of inner exception stack trace ---
   at System.Web.Services.Protocols.SoapServerProtocol.ReadParameters()
   at System.Web.Services.Protocols.WebServiceHandler.CoreProcessRequest()</faultstring>
         <detail/>
      </soap:Fault>
   </soap:Body>
</soap:Envelope>
*System error message in SAP PI* :
<?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: SOAP: response message contains an error XIAdapter/PARSING/ADAPTER.SOAP_EXCEPTION - soap fault: System.Web.Services.Protocols.SoapException: Server was unable to read request. ---&gt; System.InvalidOperationException: There is an error in XML document (1, 328). ---&gt; System.InvalidOperationException: Instance validation error: 'US' is not a valid value for Currency.
   at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read1_Currency(String s)
   at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read2_ConversionRate()
   at Microsoft.Xml.Serialization.GeneratedAssembly.ArrayOfObjectSerializer.Deserialize(XmlSerializationReader reader)
   at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
   --- End of inner exception stack trace ---
   at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
   at System.Web.Services.Protocols.SoapServerProtocol.ReadParameters()
   --- End of inner exception stack trace ---
   at System.Web.Services.Protocols.SoapServerProtocol.ReadParameters()
   at System.Web.Services.Protocols.WebServiceHandler.CoreProcessRequest()</SAP:AdditionalText><SAP:Stack/><SAP:Retry>M</SAP:Retry></SAP:Error>
I want to capture the text in Fault string in the Fault response and send it back to the Source system.
I have referred many blogs but i am unable to do it.
Will java mapping work as this is a response from the Target Webservice and NOT an errorin PI.

Answer 1

Hello.
If your scenario is ECC -> Proxy -> PI -> SOAP -> WS -> SOAP -> PI -> Proxy -> ECC.
In ESR create a Fault Message Type, and added to your Service Interface (Outboun/Inbound), use a XSLT mapping to take anyway format response, rebuid your proxy ABAP and see your "message fault" on exception tab.
this works for me.
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema">
     <xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
     <xsl:template match="/">
          <ns0:FMT_ResponseAuth>                              
                    <standard>
                         <faultText>
                              <xsl:value-of select="//detail"/>
                         </faultText>                         
                    </standard>
          </ns0:FMT_ResponseAuth>
     </xsl:template>
I hope this help you.
Edited by: KrlosRios on Nov 2, 2011 5:59 PM