0B3

Explanation
Initial program load (IPL), found incorrect information
in the LOAD parameter. The first four characters of the LOAD parameters
should contain the device number of the direct access storage device
(DASD) volume containing the SYS1.PARMLIB data set. The value specified
in the LOAD parameter is not a valid device number.

System action
The system enters a non-restartable wait state.

Operator response
Check the LOAD parameter on the hardware frame
you used to IPL the system. The first four characters are supposed
to be hexadecimal digits (0 through 9, A through F) that form the
device number where the IODF resides. For three digit device
numbers, add a leading zero so that all four characters are valid
hexadecimal digits.
If the value is incorrect, enter the correct
value and reIPL the system. If the value is correct, record the contents
of the LOAD parameter, and notify the system programmer.

System programmer response
If the LOAD parameter specifies the
correct four digit hexadecimal device number and the problem persists,
search problem reporting databases for a fix for the problem. If no
fix exists, contact the IBM® Support
Center.

Source
Initial program load (IPL)