Namespace prefix added by SAP PI

10-11  Source: Network gathering  Views:2 

we are working with SAP PI 7.11.
The interface is like this:
- sender sync connects to integration process
- integration process connects to sync receiver.
-  between there is a check for the response message to decide for use of a mail interface (reason for the ccBPM)
We are using an external definition for the message we are transporting.
The sender uses a WSDL generated from SAP PI.
The receiver simply uses the same external definition as created outside PI.
We are not doing any mapping with the message between sender and receiver.
Mapping is only used to create the mail message from the response / and to create internally another
response to the sender from the request message to provide an answer for connect issues.
The send process is fine. The receiver processes the messages and returns a response.
And now the issue is there.....
In the payload the response message looks like this:
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?><!-- XML-Validierung Ausgang Response --> <ns4:PPPFeedbackResponse xmlns:ns4='' xmlns:ns2='' xmlns:ns3='' xmlns:soap=''>
  <Fehlertext>Keine Werte zur Rueckmeldung vorhanden</Fehlertext>
As the field tags in the message do not have a prefix (ns4, ns3) the message cannot be mapped in PI to create the mail message.
As the request message does not wear any added prefixes in tags but the response does I dont understand the response.
The prefixes with ns3 or ns4 look like they are from PI itself???
So here is an example of the payload for the request (first lines)
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!--  XML-Validierung Ausgang Request   -->
<PPPReportRequest xmlns="" xmlns:soap="" xmlns:xsd="" xmlns:xsi="">
<XJustiz_Daten xmlns="">
<Grunddaten XJustizVersion="1.5">
to compare it with the response payload.
Can anybody give some explanation for this and tell how to add prefixes into the element tags or do something else
to get rid of this behaviour or explain what is going on here!
Best regards
your link contained the "missing link".
I was using this module but failed several times including killing the receiver service connect...  
Thank you very much.
Several times I heared in this project that it is PI that makes so much trouble but we are on a good way to show
that there are more issues with WebSphere.....  which can be solved by PI. 
Best regards
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