(19)The implementation and exercise of powers in the application of this Regulation should also comply with other Union and national law, including with applicable procedural safeguards and principles of the fundamental rights. Member States should remain free to set out conditions and limits for the exercise of the powers in national law, in accordance with Union law. Where, for example, in accordance with national law, prior authorisation to enter the premises of natural persons and legal persons is required from the judicial authority of the Member State concerned, the power to enter such premises should be used only after such prior authorisation has been obtained.