Explanation
A task could not be attached because one of the
following conditions existed:
- The system-attach macro returned a nonzero return code (return_code)
while attaching a task. Probably not enough storage was available
to attach the task.
- Not enough storage was available to even attempt the attach for
the task.
For information about the ATTACH return codes, see
z/OS MVS Programming: Authorized Assembler Services Reference ALE-DYN.
System action
Processing is attempted on other tasks. Final
return code is set to 8.
Operator response
Programmer response
Either increase the region size, specify
a smaller size parameter, or both, then rerun the job.
Source