KDC_ERR_SVC_UNAVAILABLE(29) is documented in Krb5.java, has an error message and KrbException.java does use it, but no error message is mapped to the code.

Also, request to add missing error codes 26--28, 51 from [1] and
> public static final int KRB_AP_ERR_NOREALM = 62;
> public static final int KRB_AP_ERR_GEN_CRED = 63;

look incorrect. Plus the mapping in errMsgList for those.

[1] https://www.rfc-editor.org/rfc/rfc4120#section-7.5.9