Considerations for triggered transactions

For intrapartition transient data queues with a trigger level greater than zero, CICS® obtains the user ID associated with the triggered transaction from the following sources:

• For a transient data queue defined with ATIFACILITY(FILE), CICS uses the USERID parameter specified in the resource definition for the transient data queue.
• For a transient data queue defined with ATIFACILITY(TERMINAL), CICS uses the user ID associated with the terminal. This can be the CICS default userid if no user is signed on at the terminal.
• For a transient data queue defined with ATIFACILITY(SYSTEM), CICS uses the link user ID obtained by the CONNECTION resource definition.