Hello
the old SOAP-based SDK web services are deprecated, maybe they will be removed shortly. At the time being, you can still use them or exploit the new REST API (http://docs.knowage.apiary.io/). REST API are very similar to their SOAP counterpart: you can get the list of available documents and execute them (this can be applied to reports, same as SpagoBI), but some operations are missing, such as retrieving the values for analytical drivers and import documents.
Hope this helps
Best regards