2. The data holder shall be entitled to fair compensation for making data available in compliance with a request made pursuant to Article 15(1), point (b). Such compensation shall cover the technical and organisational costs incurred to comply with the request including, where applicable, the costs of anonymisation, pseudonymisation, aggregation and of technical adaptation, and a reasonable margin. Upon request of the public sector body, the Commission, the European Central Bank or the Union body, the data holder shall provide information on the basis for the calculation of the costs and the reasonable margin.