Locate the AppFxWebService.asmx Endpoint
For your installed instance of Blackbaud CRM, you can find a list of endpoints on the main splash page for the application.
The Endpoint reference pages lists the various services exposed over HTTP. It includes a link to the Blackbaud AppFx Web Service documentation that lists the various operations exposed by the web service.
Place the URL to the endpoint in the browser to view a list of the endpoint's operations with some basic descriptions.