3. The officials and other persons authorised by the Lead Overseer for the purposes of the investigation referred to in paragraph 1 shall exercise their powers upon production of a written authorisation specifying the subject matter and purpose of the investigation.
That authorisation shall also indicate the periodic penalty payments provided for in Article 35(6) where the production of the required records, data, documented procedures or any other material, or the answers to questions asked to representatives of the ICT third-party service provider are not provided or are incomplete.