Article 4 3.

registration procedures operate on the basis of declarations made by hosts;

registration procedures are provided online, and free of charge, where possible, or at a reasonable and proportionate cost, and allow for the automatic and immediate issue of a registration number, that shall not include personal data, for a specific unit upon the submission by the host of the information referred to in Article 5(1) and, where appropriate, any supporting documentation required pursuant to Article 5(2);

registration procedures are subject to effective appeal mechanisms within the Member State;

a unit is not subject to more than one registration procedure;

technical means are in place to enable a host to update information and documentation;

technical means are in place to assess the validity of registration numbers;

technical means are in place to enable a host to remove a unit from the registry referred to in paragraph 5; and

hosts are required, when offering their short-term accommodation rental services via an online short-term rental platform, to declare to the online short-term rental platform whether the unit offered is subject to a registration procedure and, if it is, to provide the registration number.