Error Handling in Inbound Web Service with Session Management

Problem Description

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We have set up a Siebel Inbound Web with Session Management enabled.

The Header has the UserNameToken and PwTxt for the first time login.

1)If the first time authentication fails we get a Soap fault with 500 error code.

2)If the Session Token is expired also we get a Soap fault with 500 error code.

Is there a way for Siebel to show a custom message when authentication fails.

Thanks

Mohith Rajan

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This is the inbound SOAP message

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:kew="http://siebel.com/KEWESRDDBSSNCheck">

<soapenv:Header>

<UsernameToken xmlns="