Hi John,
Sorry - yes I meant DLookup.
I entered the code you suggested and got the following message on the highlighted code below
"You entered an invalid argument in a domain aggregate function"
This is the code:
If Not IsNull(DLookup("DOB", "Members", "[Members].[DOB] = # " & Me!DOB & " #")) Then
mes = MsgBox("possible duplicate date", vbOKOnly)
I am still going wrong somewhere.
I would also like if the DOB already exist in the table to show in the mes the first and last names of the member with the duplicated DOB. Possible?
Oh! I forgot to mention Access 2010 .mde database with linked member table if that makes a difference.
Thanks
Toukey
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