044

Explanation
During nucleus initialization program (NIP) processing,
a machine check occurred on a central processor.
The right-most
four bytes of the program status word (PSW) have the following format: aaaa0www
aaaa
The first bit contains irrelevant information. The remaining bits
represent the logical address of the central processor on which the
machine check occurred.
www
The wait state code.

System action
The system issues messages about the problem.
The system enters a non-restartable wait state.

Operator response
This is probably a hardware error. ReIPL the
system. If the error persists, configure the failing central processor
offline. This action requires a power-on-reset. Contact hardware support.

Source
Nucleus initialization program (NIP)