Validation Rule Based On Data In Table

Mar 8, 2005

Hi,

Does anyone know if its possible to base a validation rule on the data that is already in the field in a table?

e.g. there are 10 records in a table each with an ID number starting at 1 and going up to 10. When new record added i need a validation rule that will prompt the user to enter a number greater than the previous number entered for the ID.

so they will not be able to enter 1 - 10.

hope thats clear

cheers.

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