(15)In order to facilitate the smooth functioning of an internal market for card-based payments and internet and mobile payments based on cards, to the benefit of consumers and merchants, this Regulation should apply to cross-border and domestic issuing and acquiring of card-based payment transactions. If merchants can choose an acquirer outside their own Member State (‘cross-border acquiring’), which will be facilitated by the imposition of the same maximum level of both domestic and cross-border interchange fees for acquired transactions and the prohibition of territorial licensing, it should be possible to provide the necessary legal clarity and to prevent distortions of competition between payment card schemes.