I had a similar problem and struggling, googling for 1 day. But it was a simple mistake that instead of:
{http://ws.somecompany.com/services}ValidateUser
It should be
{http://ws.somecompany.com/services/}ValidateUser
Der XML-Schema-Designer (XSD-Designer) ist ein grafisches Tool, mit dem Sie ein Schemaset auf unterschiedlichen Abstraktionsebenen visualisieren können. Der XSD-Designer besteht aus den folgenden Hauptkomponenten:
a web services client library. It includes a WSDL Parser,a XSD Schema Parser and Validator and XML Parser and serializer and an API and command line tool for dynamic WSDL inspection and invocation.
XRay is a free XML editing enviroment. Now in its second major release, XRay provides support for XML Schema (XSD) and an integrated online XML tutorial system.
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