The database I'm working with has a concatenated Primary key of
Registration Date and Customer ID Number. It MUST stay this way.
You could have an autonumber as primary key and a unique index (no
duplicates) of the Registration Date and Customer ID Number.

have no idea what expression to put in to highlight duplicate values in it.
What about DCount 1?

--
Build a little, test a little.


"Jules." wrote:

Hi

I'm really struggling with a project at the moment. The database I'm
working with has a concatenated Primary key of Registration Date and Customer
ID Number. It MUST stay this way. A customer can re-register with a
different request on a different date and when this occurs I need to
highlight (red or bold)the recurrence of the customer number on the
continuous form I'm using. I've looked at the conditional formatting behind
the Customer ID field but have no idea what expression to put in to highlight
duplicate values in it.

Any help would be greatly appreciated.

Thanks