IBM SC33-1683-02 - Manual (Page 88)

UEPDMPRE
Dump is about to restart after autoswitch.
UEPDMPAB
Abnormal termination of dump.
UEPDMPDY
Buffer is about to be written, and the CICS dump data set is
a dummy file or is closed.
UEPDMPBF
Address of the dump buffer, whose length is addressed by the
parameter UEPDMPLEN.
UEPDMPLEN
Address of the 2-byte dump-buffer length.
Return codes
UERCNORM
Continue processing.
UERCBYP
Suppress dump record output.
XPI calls
WAIT_MVS can be used. Do not use any other calls.
dump domain exits
56 CICS TS for OS/390: CICS Customization Guide