Get the Unit List for an Occurrence or Booking. 

This is a listing of all Units linked to an Occurrence or Booking. 

Each Unit is represented by a TUnit. The collection of Units is represented by a List of TUnit. 

A token is passed for authentication. If the authentication fails, or other errors occur, no units are returned. The result of the authentication is represented by a TAuthenticate object. 

Requires a valid registration key entry for the Short Courses feature. 

This function has security level "Unrestricted", and can be accessed by any authenticated user.

[WebMethod(Description = "Gets a list of units within the occurrence with the specified ID")]
public TAuthUnitList GetUnitsForOccurrence(string sToken, int iID);