ILBOMSG
ILBOMSG is a COBOL routine that handles error messages. When a message is to be issued, the routine formats the message and issues it through a WTO macro instruction. The message is directed to the MSGCLASS data set. ILBOMSG also determines whether its exit is a direct return to the calling subroutine or an abnormal termination exit.
ILBOMSG is called by ILBOSRV.
Reference Sources
IBM OS/VS COBOL Subroutine Library Program Logic, LY28-6425.