Reason codes

This section contains reason codes, listed by hexadecimal value, with a description of the action required to correct the error. Each reason code is made up of 4 bytes, cccc rrrr, where:

cccc
is a halfword reason code qualifier
rrrr
is the halfword reason code described in this section.
The two high-order bytes of the reason codes returned contain a value that is used to qualify the contents of the 2 low-order bytes. Distributed File Service reason code qualifiers are found within the following ranges. (For information about reason codes outside this range, see z/OS UNIX System Services Messages and Codes.)
X'DF01'-X'DFFF'
File Exporter Exit Routine (IOEGLUE) and DFSKERN
X'EF01'-X'EFFF'
z/OS File System (zFS)