Hi Alrik,

 

The current documentation for the API is a work in progress as we finalize those web service calls. When it's complete, it'll include the ResultCode definitions. You can check out an example of one section that's been completed here: 

 

I've heard back that the final documentation of the API should include these result codes definitions. That said, you shouldn't necessarily need to look at those directly, as the reason why a call failed would be included in the SOAP message string that's returned. For example, the call that's returned would say: "Invalid permissions." or "Failed to get the subscriber list".