The Errno2 value in the second half of the word is the return code and reason code from a getpwnam() callable service request.
0814 - return code 8 - reason code x'14' which is decimal 20.
In UNIX System Services Programming: Assembler Callable Services Reference
the following reasons are given for this callable service..
RACF Return RACF Reason Explanation
8 0 No profile found.
8 4 If the search is by GID: The GID is not defined.
If the search is by group name: The current group is not defined.
8 8 The group name is not defined.
8 12 There was an internal error during RACF processing.
8 16 Recovery could not be established.
8 20 The current group is incompletely defined.