If Not Intersect(Target, Range("F34:N" & Cells(Rows.Count, "A").End(xlUp).Row)) Is Nothing Then
        If WorksheetFunction.CountIf(Rows(Target.Row).Columns("A:E"), "<>") = 4 Then
            If WorksheetFunction.CountIf(Rows(Target.Row).Columns("F:N"), "<>") < 9 Then
                If Range("P" & Target.Row) = "" Then
                    Application.EnableEvents = False
                    Z = Application.InputBox("Un commentaire est obligatoire" & vbLf & "pour cette ligne")
                    If Not Z = False Then Range("P" & Target.Row) = Z
                    Application.EnableEvents = True
                End If
            End If
        End If
    End If