07F

Explanation
During recovery, the system found that the task
control block (TCB) queue associated with the abnormally ended address
space was empty.

System action
The system abnormally ends the address space or
job.  The system writes messages, a logrec data set error record,
and a dump.

System programmer response
Collect all printed output and output
data sets related to the problem. Search problem reporting data bases
for a fix for the problem. If no fix exists, contact the IBM® Support Center.  Provide the logrec data
set record and dump.

Programmer response
Run the job again.  If the error recurs,
notify the system programmer.

Source
Task management