Use the INTDEBUG statement to specify error message text and an index value. If the specified message text is issued the number of times indicated by the index value, JES3 issues a U005 JES3 user abnormal end and takes a storage dump. See z/OS JES3 Diagnosis for a description of JES3 completion codes.

This initialization debugging facility monitors all occurrences of a specified message up to the occurrence where a dump is being requested. Only one message can be monitored at a time. Following the dump, the main must be reinitialized.