This method is used to determine all available entity categories.
Reference should contain the Reference returned by the Login Method and is used to identify the user of the Web Service.
ResponseDataSet will contain a Status DataTable with a single row and the following columns:
and a Data DataTable with zero or more rows and the following columns:
The following Web Service call:
GetCategories("18,23")
could produce a DataSet with the following Status DataTable:
Code Text 0 OK
and the following Data DataTable:
Category Company Contact Opportunity Company Event