Article 55 – Mutual assistance
|1. Supervisory authorities shall provide each other relevant information and mutual assistance in order to implement and apply this Regulation in a consistent manner, and shall put in place measures for effective co-operation with one another. Mutual assistance shall cover, in particular, information requests and supervisory measures, such as requests to carry out prior authorisations and consultations, inspections and prompt information on the opening of cases and ensuing developments where data subjects in several Member States are likely to be affected by processing operations.
2. Each supervisory authority shall take all appropriate measures required to reply to the request of another supervisory authority without delay and no later than one month after having received the request. Such measures may include, in particular, the transmission of relevant information on the course of an investigation or enforcement measures to bring about the cessation or prohibition of processing operations contrary to this Regulation.
3. The request for assistance shall contain all the necessary information, including the purpose of the request and reasons for the request. Information exchanged shall be used only in respect of the matter for which it was requested.
4. A supervisory authority to which a request for assistance is addressed may not refuse to comply with it unless:
(a) it is not competent for the request; or
5. The requested supervisory authority shall inform the requesting supervisory authority of the results or, as the case may be, of the progress or the measures taken in order to meet the request by the requesting supervisory authority.
6. Supervisory authorities shall supply the information requested by other supervisory authorities by electronic means and within the shortest possible period of time, using a standardised format.
7. No fee shall be charged for any action taken following a request for mutual assistance.
8. Where a supervisory authority does not act within one month on request of another supervisory authority, the requesting supervisory authorities shall be competent to take a provisional measure on the territory of its Member State in accordance with Article 51(1) and shall submit the matter to the European Data Protection Board in accordance with the procedure referred to in Article 57.
9. The supervisory authority shall specify the period of validity of such provisional measure. This period shall not exceed three months. The supervisory authority shall, without delay, communicate those measures, with full reasons, to the European Data Protection Board and to the Commission.
10. The Commission may specify the format and procedures for mutual assistance referred to in this article and the arrangements for the exchange of information by electronic means between supervisory authorities, and between supervisory authorities and the European Data Protection Board, in particular the standardised