Hey! We are currently working on the documentation regarding the query service - https://docs.microsoft.com/en-us/dynamicsax-2012/appuser-itpro/query-service.
There are several questions:
1. Does Query Service must be installed as an additional service or it's included in the standard Dynamics AX 2012 installation package?
2. Please share the experience with WSDL. How to get it? How to request it?