If you search this group on "autonumber" you'll find a lot of advice.
Autonumber is a field type that is really a long integer, with some hidden
code
to increment the value for every added record. I do NOT recommend
any of these pseudoID forms that use combinations of initials/date/other,
as they ALL will eventually fail and most are vulnerable to user input
mistakes.
Trying to "imbed" data within an ID is almost always a bad idea.
Most good data designs have a primary key for each table,
generally an autonumber field. Most applications do not display that ID, but
use it internally for relational integrity.
That said, one of the more common solutions for what you ask, is to
concatenate
2 or more fields in the format that you require.
On your forms/reports
that need the pseudoID displayed, create an unbound textbox and set its
control source to something like:
=DatePart("yyyy", Now())&[myAutonumberID]
....etc.
-Ed
