66. In order to fulfil the objectives of this Directive, namely to protect the fundamental rights and freedoms of natural persons and in particular their right to the protection of personal data and to ensure the free exchange of personal data by competent authorities within the Union, the power to adopt acts in accordance with Article 290 of the Treaty on the Functioning of the European Union should be delegated to the Commission. In particular, delegated acts should be adopted in respect of notifications of a personal data breach to the supervisory authority. It is of particular importance that the Commission carry out appropriate consultations during its preparatory work, including at expert level. The Commission, when preparing and drawing-up delegated acts, should ensure a simultaneous, timely and appropriate transmission of relevant documents to the European Parliament and Council.