404 when calling Remedy

I am calling Remedy from WSO2 ESB and I get the following soap error:

<?xml version='1.0' encoding='utf-8'?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Body><text xmlns="http://ws.apache.org/commons/ns/payload">default backend - 404</text></soapenv:Body></soapenv:Envelope>

I have tested multiples endpoint configurations with no success. If I call the endpoint with straight forward with SoapUI I get the response, but if I go through ESB I get the error. Any help on this error?

Cheers