MSC migration considerations

The enhancements to Multiple Systems Coupling (MSC) in IMS 15 introduce a number of migration considerations.

Migration considerations for MSC exit routines
Exit routines that use information from the MSC logical and physical blocks, such as the TM and MSC Message Routing and Control User exit routine (DFSMSCE0) and the Message Control/Error exit routine (DFSCMUX0), must be changed to either use callable services or use the FIND/SCAN function of the DFSCBTS macro to find the logical link blocks (LLBs) and the physical link control blocks (LCBs).
Migration considerations for dynamic definition of MSC resources
There are several considerations for migrating to IMS 15 support for the dynamic definition of MSC resources.
Migration considerations for IMSRSC repository support for dynamically defined MSC resources
There are several considerations for migrating to IMS 15 IMSRSC repository support for dynamically defined MSC resources.

Parent topic: Migrating to IMS 15: TM