Processing Considerations

Consider the following when writing an event exit routine:

The event exit routine must be a reentrant program
The event exit should be in LPA or in an authorized LINKLIST or LINKLIB concatenation on all of the MVS™ systems in the sysplex that are connected to the ARM couple data set
The event exit routine is given control on the system where the restart will occur
If this exit is getting control because the element failed, the address space the element was running in is no longer addressable
If this is a cross-system restart, make sure all addresses passed in the event exit parameter list, specified on the REGISTER request, are addressable from this system.