Bonjour,
un solution via une macro
Sub aargh()
For i = 2 To Cells(Rows.Count, "G").End(xlUp).Row
For j = 2 To Cells(Rows.Count, "B").End(xlUp).Row
If Cells(i, "F") = Cells(j, "B") And Cells(i, "G") = Cells(j, "C") Then Cells(i, "H") = Cells(j, "A"): Exit For
Next j
Next i
End Sub