He considers if the entities of public law have d’inscriure its files in the Register of Data Protection of Catalonia and, at the same time, in the General Register of Protection of Data of Spanish l’Agència. It is concluded that the double inscription is not necessary; if these entities are understood in l’àmbit d’actuació of Catalan l’Agència, it is necessary that the inscription is carried out in its Register. In so far as it corresponds to the General Register of Protection of Data to watch over the advertising of l’existència of the files, the inscriptions that the Catalan Agency carries out will be sent him.