Restrictions

See JES2 exit usage limitations for a listing of specific instances when this exit will be invoked or not invoked.
Installation Exit 52 is not invoked for jobs such as SYSLOG, $TRCLOG, or JESMSG.
Do not use this exit to set fields in the JCT; they will likely be overwritten by future processing.
Installation Exit 52 is not invoked for jobs submitted through card readers, RJE, SAN and BSC NJE and SPOOL reload.