The Commission should endorse those draft regulatory technical standards by means of delegated acts pursuant to Article 290 TFEU in order to give them binding legal effect. They should be subject to amendment only in very restricted and extraordinary circumstances, since the Authority is the actor in close contact with and knowing best the daily functioning of financial markets. Draft regulatory technical standards would be subject to amendment if they were incompatible with Union law, did not respect the principle of proportionality or ran counter to the fundamental principles of the internal market for financial services as reflected in the acquis of Union financial services legislation. The Commission should not change the content of the draft regulatory technical standards prepared by the Authority without prior coordination with the Authority. To ensure a smooth and expeditious adoption process for those standards, the Commission’s decision to endorse draft regulatory technical standards should be subject to a time limit.