Reason codes

Reason codes are listed by hexadecimal value and include a description of the action required to correct the error. Each reason code is made up of four bytes, cccc rrrr, where cccc is a halfword reason code qualifier and rrrr is the halfword reason code.

The two high-order bytes of the reason codes that are returned contain a value that is used to qualify the contents of the two low-order bytes. Reason code qualifiers for zFS are found within the range X'EF01'-X'EFFF'. For information about reason codes outside this range, see z/OS UNIX System Services Messages and Codes.