Vertaling van "found interesting although several stakeholders had doubts " (Engels → Frans) :

The product panels idea was found interesting, although several stakeholders had doubts about their likely success at the European level.
Les parties intéressées ont trouvé intéressante l'idée de panels de produits, mais plusieurs d'entre elles ont exprimé des doutes quant à ses chances de succès à l'échelon européen.