Article 6 10.

Where a Member State requires hosts to submit further information and documentation as referred to in Article 5(3), and where the competent authority finds that there are serious doubts regarding the compliance with national, regional or local rules referred to in Article 2(2), point (a), it may apply the provisions of this Article to such information or documentation provided that the requirement in question is non-discriminatory and proportionate, and complies with Union law.