3. When giving effect to paragraphs 1 and 2, the Commission and the Board, and where relevant other bodies, shall aim to ensure that the codes of conduct clearly set out their specific objectives, contain key performance indicators to measure the achievement of those objectives and take due account of the needs and interests of all interested parties, and in particular citizens, at Union level. The Commission and the Board shall also aim to ensure that participants report regularly to the Commission and their respective Digital Services Coordinators of establishment on any measures taken and their outcomes, as measured against the key performance indicators that they contain. Key performance indicators and reporting commitments shall take into account differences in size and capacity between different participants.