IBM SC33-1683-02 - Manual (Page 208)

UEIDKEEP
The resources are recoverable at a warm or emergency
restart.
UEIDLOSE
The resources are not recoverable.
Note: The exit is not driven during a CICS restart.
Return codes
UERCNORM
Continue processing. This is the default.
UERCPURG
Task purged during XPI call.
XPI calls
You can use all XPI calls.
Important
Abends in a program enabled at the XRSINDI exit point may cause CICS to
terminate, because for some resources the exit is driven during syncpoint. If
the exit returns code UERCPURG during syncpoint for these resources, abend
code AUEP is produced and CICS terminates.
resource management module exit
176 CICS TS for OS/390: CICS Customization Guide