Linux, Windows AD domain, and IDs

[Scott Ehrlich]

You have a CentOS (for example) workstation that is a member of a
Windows AD domain courtesy of modified smb.conf and krb5.conf files.
There are, thus, no local user accounts on the linux workstation.

There is a network application that benefits most (maybe even
requires) the user's employee ID as their linux workstation uid.

Thus, if I log in, my domain username might be scott12.   My employee
ID might be se123456.    If I log into the linux workstation, I'm
going to log in as scott12 along with providing my password.    I type
id at the shell, and am given something like 100001 (scott12) for the
user.    How can I manage to make the id [also] equal to se123456 for
user scott12 without breaking anything?

Or, if not possible, is there any other option other than to create a
local account as se123456 and likely migrate the user's world to that
new local account?  I'd rather not.

Thanks for any leads.

Scott