=SI(SOMMEPROD((Col_Lieu=$A2)*(Col_Compte=$B2)*(Col_Ident=$C2)*(MOIS(D$1)=MOIS(Col_Date1))*(ANNEE(D$1)=ANNEE(Col_Date1)));SOMME(INDEX($A2:C2;MAX(SI($A2:C2<>"";COLONNE($A:C))));SOMMEPROD((Col_Lieu=$A2)*(Col_Compte=$B2)*(Col_Ident=$C2)*(MOIS(D$1)=MOIS(Col_Date1))*(ANNEE(D$1)=ANNEE(Col_Date1));Col_Montants));"")