Translate the following English sentence to French:
"That these common standards should exist is laid down in the Treaty, and the Commission has a proposal at an advanced stage of preparation for the adoption of common standards for the instruments in question."
L'existence de ces formats communs est prévue par le Traité et une proposition de la Commission, en phase d'élaboration avancée, vise l'adoption de formats communs pour les instruments en cause.