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No Duplicates Allowed! (FileMaker 5

Question asked by agreer on Feb 11, 2010
Latest reply on Feb 12, 2010 by agreer


No Duplicates Allowed! (FileMaker 5 & 5.5)


I have a table with a list of items, each of which has a unique product number that is a calculation (=Product Number + "-" + Customer Number). I'd like for a message to pop up if someone tries to enter a duplicate unique product number. However, I don't have any validation options when using a calculation field. Any ideas?