Macro to prevent duplicate entries in multiple columns

[Raaj Chauhan]

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I am currently using this macro to prevent users from entering similar entries within a spreadsheet. This is working fine in a single column. But how can I add similar in multiple columns (like Column A, D and F). Each column as to allow only unique records only. Please help me out

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I am currently using this macro to prevent users from entering similar entries within a spreadsheet. This is working fine in a single column. But how can I add similar in multiple columns (like Column A, D and F). Each column as to allow only unique records only. Please help me out Private Sub Worksheet_Change(ByVal Target As Range) With Target If .Column <> 1 Or .Cells.Count > 1 Then Exit Sub If WorksheetFunction.CountIf(Columns(.Column), .Value) > 1 Then Application.DisplayAlerts = False .ClearContents Application.DisplayAlerts = True MsgBox "Aadhar no. already exists!" End If End With End Sub

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[Fluff]

Cross posted https://stackoverflow.com/questions/48437541/macro-to-prevent-duplicate-entries-in-multiple-columns#

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