Method 'XYZ' cannot be reflected

Question

We have consumed a third party web service and are trying to invoke it from an ASP.NET web application. However when I instantiate the web service the following System.Inval

Answer 1

I'm guessing the wsdl emitted by or supplied with the service is not in a form that wsdl.exe or serviceutil can understand - can you post the wsdl or link to it?

how are you creating the proxy classes?

Also you might like to try and validate the wsdl against the wsdl schema to check its valid