Holds the unique identifier of a conversation group.
property GroupId: TGuid;
Use the GroupId property to store a unique identifier of the conversation group. It is used for executing Transact-SQL queries.
The value of this property can be set when calling the TMSServiceBroker.BeginDialog method with the RelatedConversation or the GroupId parameter. If TMSServiceBroker.BeginDialog was called with these parameters omitted, the GroupId will be assigned to the unique value.
If the conversation already exists, you can assign a new value for GroupId. See the description of the MOVE CONVERSATION statement in MSDN for details.