Bonjour Le Forum @finarobert
VBA avec votre fichier en Poste #2
Sub Programme2_Doublons()
    Dim wsSrc As Worksheet, wsDst As Worksheet
    Dim lastRow As Long, i As Long, outRow As Long
    Dim idCourant As String, ligneIdentite As String
    Dim dict As Object
    Dim ta As String, tb As...