ArcMap: Preventing duplicated data

Discussion created by Salemation on Dec 18, 2013
Latest reply on Jan 7, 2014 by lluzgeodata-com-ph-esridist
Dears Esri supporters,

I would like to know the solution to prevent an employee from duplicating a unique number into specific field.

Let's say the first house is 1 .. I want to prevent the employee from entering the same number into the second house and prevent the duplicate?

So upon editing the attributes of a specific map, it prevents the incident of duplication. Like giving him an error dialog or a hint that he is duplicating a specific number.

Thanks in advance