IRLM service and release coexistence

As you apply IRLM service to members of a data sharing group, some members run with the newer service level, and some run with the older service level.

A mix of service levels can raise issues that you must consider.

When the IRLM subsystems in the group are at different service levels, the group function level for IRLM is the lowest IRLM function level. All IRLM subsystems in the group are functional, but any enhancements or fixes that were made at the higher function levels are not available.