samba - Jun 2002 - error code definitions

Hello all.

I am trying to track down an annomoly here and it reports error codes of
406, 497, 1367, 1605.
Where can I find definitions for these error codes? (all error codes
would be better)
They show up on the log of the server that is running samba. There are
no errors at the associated times in the smbd.log file.

Thanks.
Daniel