1I91A SUB-SYSTEM ID =
Cause: The RDE function was specified during system generation and an IPL reason code has
been entered. The operator must enter a sub-system ID code that best identifies the failing
sub-system (if any) that caused IPL.
System Action: If SYSLOG is assigned to a keyboard, the system waits for an operator
response. Otherwise, the default (00) is taken.
Programmer Action: none.
Operator Action: Enter one of the following sub-system ID codes:
00 - Unknown. Must be used with reason codes DF, EN, NM, OP, UN, and UP. 00 is the
10 - Processor failure (CPU, [integrated] channel, storage unit, etc.),
20 - DASD failure in a DASD unit or its associated control unit (2314, 3330, 2841, etc.).
30 - A device without an ID code (such as a paper tape unit) caused the failure.
40 - Magnetic tape failure in a magnetic tape unit or its associated control unit (2401, 2803,
50 - Failure in a card reader/punch. a printer, or the associated control unit (2540, 1403,
60 - Failure in a magnetic ink character reader (1259, 1419, etc.) or an optical character
reader (1270, 1287, etc).
70 - Teleprocessing failure in a teleprocessing control unit (2701, 2702, etc.),
80 - Video display unit (2260, etc.) or its associated control unit caused the failure. _
90 — IBM-supplied control program (such as the DOS/VS system or one of its components)
caused the failure.
91 - IBM Programming Product failure.
If the ID code is not entered (only END/ENTER is pressed), the default, 00, is assumed.
However, if an invalid ID code is specified, message 1I92I is issued and message 1I91A is
repeated until a valid response is made.
1. Always use ID code 00 with reason codes DF, EN, NM, OP, UN, and UP.
2. ID codes 10, 20, 30, 40, 50, 60, 70, 80, 90, and 91 should be used with reason codes CE,
IE, IM, and ME.
Used with Courtesy and Permission of International Business Machines, Inc.