328

Explanation
During processing of an EXTRACT macro, the system
found that the task control block (TCB) specified in the second operand
was not for a subtask of the caller's TCB.

System action
The system abnormally ends the program that issued
the EXTRACT macro.

System programmer response
  If the error recurs and the program
is not in error, look at the messages in the job log for more information.
Search problem reporting data bases for a fix for the problem. If
no fix exists, contact the IBM® Support
Center. Provide the source program listing for the job.

Programmer response
Change the EXTRACT macro to specify a TCB
for a subtask.  If the macro was specified correctly, check for program
errors that incorrectly modified the EXTRACT macro expansion. Correct
the error.  Run the job again.

Source
Task management