Sub Макрос1()
'
' Макрос1 Макрос
'

'
    With Selection.Validation
        .Delete
        .Add Type:=xlValidateList, AlertStyle:=xlValidAlertStop, Operator:= _
        xlBetween, Formula1:="=исходник"
        .IgnoreBlank = True
        .InCellDropdown = True
        .InputTitle = ""
        .ErrorTitle = ""
        .InputMessage = ""
        .ErrorMessage = ""
        .ShowInput = True
        .ShowError = True
    End With
End Sub

ActiveWorkbook.Names("ИСХОДНИК").Delete 'удаляем именованный диапазон
'копируем из В1 листа 1 в первую пустую столбца А на листе 2
Worksheets("Лист1").Range("B1").copy Worksheets("Лист2").Range("A" & Worksheets("Лист2").Range("A1").CurrentRegion.Rows.Count +1)
'делаем новый именованный диапазон
ActiveWorkbook.Names.Add Name:="ИСХОДНИК", RefersToR1C1:="=Лист2!R1C1:R" & Worksheets("Лист2").Range("A1").CurrentRegion.Rows.Count & "C1"

With Selection.Validation
        .Delete
        .Add Type:=xlValidateList, AlertStyle:=xlValidAlertStop, Operator:= _
        xlBetween, Formula1:="1,2,3,4,5,6,7,8,9"
        ....
    End With

Sub ПРОВЕРКА()
   Dim j As String, i As Long, w As Long
    j = 14: Do While Cells(j, 4) > "": j = j + 3: Loop: j = j + 1
    For i = 14 To j Step 3
        For w = 5 To 35
            a = Cells(i, w)
            With Cells(i, w).Validation
                .Delete
                If Not IsNumeric(Cells(i, w)) Then
                    S = "А,Б,У,О,ПР,К"
                    errS = "Допускаются только буквенные значения"
                Else
                    X = "=или(счётесли(ИСХОДНИК;" & Cells(i, w).Address & ");счетесли(" & Cells(i, w).Address & ";" & a & "))"
                    S = "А,Б,У,О,ПР,К," & Replace(Cells(i, w), ",", ".")
                    errS = "Допускаются только буквенные значения или " & Replace(Cells(i, w), ",", ".")
                End If
                    .Add Type:=xlValidateList, AlertStyle:=xlValidAlertStop, Operator:=xlBetween, Formula1:=S
                    .InCellDropdown = True: .ErrorMessage = errS
                    .ErrorTitle = "Отклонение от условий ": .ShowInput = False: .ShowError = True
            End With
        Next w
    Next i
End Sub