soap fault: No such operation

Hi folks,

I have the following scenario:

RFC --> WS

the WS works, I tried it with XML Spy and WSDL generated by the Webservice.

but whenever I try to call the Webservice over XI I get the ERROR Message "soap fault: No such operation 'INPUT' from the Webservice.

I have no idea why, because the wsdl is generated by the webservice but it seems I call the false message or the message doesn't exist.

But why?

Forward Thanks for all hints.

Regards Johann