run. It is important that your exit program supply a terminal
netname if the TOR to which it directs theATI request is a member
of a VTAM generic resource.
Return codes
UERCTEUN
Terminalunknown, reject request.
UERCNETN
Terminalknown, netname returned in UEPICNTO.
UERCSYSI
Terminalknown, sysid returned in UEPICSYO.
UERCPURG
Taskpurged during XPI call.
XPI calls
The following must not be used:
vADD_SUSPEND
vDELETE_SUSPEND
vDEQUEUE
vENQUEUE
vRESUME
vSUSPEND
vWAIT_MVS.
The sample program for the XALTENF and XICTENF exits,DFHXTENF
One program can be used for both exits, or a separate program can be written for
each. Figure 2 on page 231 shows the executable code from the supplied sample
program DFHXTENF,which can be used for both exits. DFHXTENF rejects
transient data requests, because the action in this case is very much
installation-dependent.
230 Customization Guide