012

Explanation
A program incorrectly issued a TIMEUSED macro.
A reason code in register 15 explains the error: Code
Explanation
4
The program issued TIMEUSED with LINKAGE=SYSTEM, but the program
was not in task control block (TCB) mode.
8
The program issued TIMEUSED with LINKAGE=SYSTEM, but the program
held one or more locks.
C
The program issued TIMEUSED with LINKAGE=SYSTEM when enabled unlocked
task (EUT) recovery routine was running.

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

Programmer response
Modify the code so that TIMEUSED will be
issued in the correct environment.  Run the program again.

Source
Timer supervision