53E

Explanation
During end-of-task processing, the system found
an error before: The system could post an event control block (ECB) for the ending
task
The system could schedule an end-of-task exit routine (ETXR)
The system could determine that the task had neither an ECB nor
an ETXR

The task contains either: An end-of-task ECB, if the ECB parameter was specified on the
ATTACH macro that created the task
An ETXR if the ETXR parameter was specified on the ATTACH macro

System action
The system abnormally ends the originating task
for the task in error.

System programmer response
  Search problem reporting databases
for a fix for the problem. If no fix exists, contact the IBM® Support Center.

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

Source
Task management