I created a DV with multiple selection using Debra's code and made minor
modification. It worked before but now it does not work.
Option Explicit
Private Sub Worksheet_Change(ByVal Target As Range)
On Error GoTo exitHandler

Dim rngDV As Range
Dim lRow As Long
Dim lCol As Long

lCol = Target.Column 'column with data validation cell

If Target.Count 1 Then GoTo exitHandler

On Error Resume Next
Set rngDV = Cells.SpecialCells(xlCellTypeAllValidation)
On Error GoTo exitHandler
If rngDV Is Nothing Then GoTo exitHandler
If Intersect(Target, rngDV) Is Nothing Then
'do nothing
Else
If Target.Value = "" Then GoTo exitHandler
Application.EnableEvents = False
Select Case Target.Column
Case 3
If Target.Offset(0, 1).Value = "" Then
lRow = Target.Row
Else
lRow = Cells(Rows.Count, lCol + 1).End(xlUp).Row + 1
End If
Cells(lRow, lCol + 1).Value = Target.Value
End Select

End If

exitHandler:
Application.EnableEvents = True

End Sub

Help
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mmk