WSDL Reference

The web services make available the Web Services Definition Language (WSDL) file where details about the service are described: the name of each action method, the parameters, return values and faults expectable.

From this WSDL, Visual Studio (and other tools, such as the SVCUtil.exe command line utility) can generate code proxies that can interact with the web service.

The WSDL for the What If web service can be found by appending ?WSDL to the URL i.e., https://fslpresaleswif.fslcgix-uat.co.uk/whatif.asmx?WSDL.