Notifying Members of Changes

A member requests XCF to notify it of changes to other members in the group or to systems in the sysplex by identifying a group user routine to XCF on the IXCJOIN macro. A member or a multisystem application can also request information about changes to systems in the sysplex by identifying an ENF event code routine. ENF code 35 provides function codes to notify listeners when a system has joined a sysplex or has been removed from a sysplex.

This topic contains information on the following topics related to the group user routine:

How XCF works together with the group user routine
Events that cause XCF to schedule a group user routine
How to code a group user routine.

For information about using an ENF event code routine, see Using ENF Event Code 35.