On May 4, 5:53*pm, Tom Hutchins
wrote:
Try this Worksheet_Change event code. I named the range which should have no
duplicate values UniqRng in this example.

Private Sub Worksheet_Change(ByVal Target As Range)
Dim tgt As Range, xx As Range
For Each tgt In Target
* * If (Not Intersect(tgt, ActiveSheet.Range("UniqRng")) Is Nothing) And _
* * * * (Len(tgt.Value) 0) Then
* * * * For Each xx In ActiveSheet.Range("UniqRng")
* * * * * * If xx.Address < tgt.Address Then
* * * * * * * * If xx.Value = tgt.Value Then
* * * * * * * * * * xx.Value = vbNullString
* * * * * * * * End If
* * * * * * End If
* * * * Next xx
* * End If
Next tgt
End Sub

This code should be placed on the code page of the worksheet where you want
this to work.

Hope this helps,

Hutch

This worked perfectly. Thank you very much.!