EAN matching is allowed and highly recommended by Fnac Darty to speed the integration and activation of your shop account.
The mapping is done on the basis of the EAN code. Make sure the product already exists in Fnac Darty data base before sending your offers.
Make sure to fill in the "EAN" attribute and all attributes indicating "Champ du flux offre" in their description in Lengow (= Field from offers feed).