How to set up a TIML multi region routing in CICS?
See doc and comments in TIRSLEXT as follows below:
THE SYSID NAME OF THIS CICS REGION
TO START THE SERVER IN A CICS REGION DIFFERENT FROM THE CICS
REGION WHERE THE TISL LISTENER IS EXECUTING
ENSURE THE COMMAREA CICS DATA AREA CONTAINS THE NAME OF THE
SYSID OF THAT CICS REGION FOR TRANSACTION ROUTING
This is a user exit with no examples of the possible changes. Customer can modify as desired by specific tran code and/or userid. Using this exit would be a static routing. If custom processing is required, i.e., load balancing, use CICS Dynamic Routing.