The user data that is passed to channel send exits when they are called.
The value of the property is a string of one or more items of user data separated by commas. By default, the property is not set.
The rules for specifying user data that is passed to a sequence of channel send exits are the same as those for specifying user data that is passed to a sequence of channel receive exits. For the rules therefore, see XMSC_WMQ_RECEIVE_EXIT_INIT.
This property is relevant only when an application connects to a queue manager in client mode.