The informative flows of the data of the persons under age among different public administrations in exercise of the competences on the subject of protection of the children and teenagers are protected by the regulations of data protection, without the need for having the consent of l’afectat. However, only the data can be treated that are strictly necessary for the development of the functions of protection of the minor person in situation of risk or of helplessness. It is advisable to establish protocols d’actuació in order to protect the data.