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File No. S360-20
Order No. GC28-6631-12 OS




Systems Reference Library




IBM System/360 Operating System:
Messages and Codes
OS Release 21


This publication lists, explains, and suggests
appropriate responses to the system completion
codes, wait state codes, and messages produced by
) IBM-supplied components of the IBM System/360
Operating system. The codes and messages are
presented in alphameric order.
(

I Twelfth Edition (March, 1972)

This is a major revision of, and obsoletes, GC28-6631-11 and
I Technical Newsletter GN28-2501. Major changes to the text
are listed in the "Summary of Amendments." All changes to
the text are indicated by a vertical line to the left of the
c~n~.



I This edition applies to release 21, of IBM System/360
Operating System, and to all subsequent releases until
otherwise indicated in new editions or Technical Newsletters.
C~nges are continually made to the information herein;
before using this publication in connection with the
operation of IBM systems, consult the latest IBM System/360
and System/370 SRL Newsletter, Order No. GN20-0360, for the
editions that are applicable and current.

Requests for copies of IBM publications should be made to
your IBM representative or to the IBM branch office serving
your locality.

A form for readers' comments is provided at the back of
this publication. If the form has been removed, comments may
be addressed to IBM Corporation, Programming systems
Publications, Department D58, PO Box 390, Poughkeepsie, N. Y.
12602. Comments become the property of IBM.
(