Call to ABAP webservice failed following upgrade to ECC6

Hi all,
I have the following interface : LDAP (webservice) ->XI 3.0sp17 -> ECC5 (webservice) sending employees id. it works fine.
But, these days, SAP ECC has been upgraded from ECC5 to ECC6 (was 7.0). And now the call to the ECC webservice does not work anymore. I have the following error message in XI monitoring :
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
- 
- <SAP:Error xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="1">
<SAP:Category>XIAdapter</SAP:Category>
<SAP:Code area="PARSING">ADAPTER.SOAP_EXCEPTION</SAP:Code>
<SAP:P1 />
<SAP:P2 />
<SAP:P3 />
<SAP:P4 />
<SAP:AdditionalText>soap fault: SOAP processing failure, error id = 1001</SAP:AdditionalText>
<SAP:ApplicationFaultMessage namespace="" />
<SAP:Stack />
<SAP:Retry>M</SAP:Retry>
</SAP:Error>
The webservice is based on a function module that works fine when I test it. The webservice is active.
The issue is that I do not know if the problem comes fromm ECC or from XI...
Could it be a compatibility issue?
If anyone could help me, it would be great!
Thanks,
Philippe

The point has been solved by this way :
On ECC6, we have activated the webservice again, in spite of his "activated" status.
To do this, I used the SE80 transaction :
Package Z*** -> Enterprise Services --> Enterprise Services --> Description service --> Z*** (name of the webservice)
Then activation of the webservice, double-click on Reference object and activation of the Function module.
P. Rose.

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Message was edited by:
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(c) Copyright 1999 Oracle Corporation. All rights reserved.
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Consuming ABAP Webservice in Webdynpro app

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santosh,
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<wsse:UsernameToken wsu:Id="SecurityToken-XXXXXXXXXXXXXXXXXXXXXXXXX" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
<wsse:Username>uname</wsse:Username>
<wsse:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText">pwd</wsse:Password>
</wsse:UsernameToken>
</wsse:Security>
Can you please send me the steps?
I tried with giving the username and password under Service Account.
I tried to create a wspolicy under business service. But nothing works...
Please help me at the earliest.
Also please give me steps in sequence.

Now i made sure that the endpoint is available!
Now am getting this error:
<soapenv:Fault>
<faultcode>soapenv:Server</faultcode>
<faultstring>BEA-380002: localhost1</faultstring>
<detail>
<con:fault xmlns:con="http://www.bea.com/wli/sb/context">
<con:errorCode>BEA-380002</con:errorCode>
<con:reason>localhost1</con:reason>
<con:location>
<con:node>RouteNode1</con:node>
<con:path>request-pipeline</con:path>
</con:location>
</con:fault>
</detail>
</soapenv:Fault>
Also in the invocation trace i can observe the following things:
Under Invocation Trace:-
========================
     Receiving request =====> Initial Message context
     ===============================================
     under added header:-
     ==================
     <soap:Header xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
     </soap:Header>
     under RouteNode1
================
     Route to "TargetMyService_BS"
$header (request):-
<soap:Header xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
</soap:Header>
Under Message Context changes:-
*===============================*
I can find this element also:-
con:security>
*<con:doOutboundWss>false</con:doOutboundWss>*
*</con:security>*
eventhough we enabled ws security, how the above tag can be false?
I think its getting failed to populate the header with the required login credentials.
The other doubt i have is:-
=================
I have chosen the service account type is static...is this right?

Call to ABAP webservice failed following upgrade to ECC6

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