DEBUG-related Keywords

DBTXT: Causes additional information to be inserted into IEBCOPY normal processing messages (that is, the message numbers listed in the z/OS® message manuals) and also prints IEB1066D messages.
DBMSG: Causes additional messages to be issued. These messages always have a suffix "D" for Debug, and are not included in the z/OS message manuals. They can only be interpreted by customer service or development by looking at the code where the messages originate. Customers are not expected to understand these messages.
DBDMP: Causes IEBCOPY to print a diagnostic dump on SYSPRINT when an internal error, program check, or user abend occurs.
DBABE: Causes IEBCOPY to abend after issuing specific messages. A user abend is issued corresponding to the message number. For example, after message IEB1021I abend U1021 is issued. DBABE implies DBDMP.
DEBUG: Activates DBTXT, DBABE, DBDMP, and DBMSG.