Article 13 — Verification activities

1. The conformity assessment body referred to in Article 14 shall verify the reliability, credibility, adherence and accuracy of the output data disclosed by transport and hub entities and data intermediaries which calculate emissions. 2. The conformity assessment body shall verify the compliance of the output data disclosed with the requirements laid down in Articles 3 to 9, and based on evidence referred to in Article 10(5). That verification shall address: (a) the calculation methodology used; (b) the sources of the input data used for the calculation; (c) the correctness of the calculation performed; (d) the common metrics applied. 3. Where external calculation tools are used, the conformity assessment body shall take into account their respective certificates of conformity as referred to in Article 11(2). 4. Where the verification identifies incorrect calculations or non-compliance with Articles 3 to 9, the conformity assessment body shall inform the transport and hub entities and the data intermediaries concerned thereof without undue delay. Those transport and hub entities and data intermediaries shall thereafter correct the calculation or remedy any non-conformities so as to enable completion of the verification. 5. The transport and hub entities and data intermediaries shall provide the conformity assessment body with any additional information that enables it to carry out the verification. The conformity assessment body may conduct checks during the verification to determine the reliability of data and calculations. 6. Upon completion of the verification, the conformity assessment body shall draw up, where appropriate, a proof of compliance confirming that the output data comply with the relevant requirements laid down in this Regulation and specifying whether the transport and hub entities and data intermediaries use primary data. 7. The conformity assessment body concerned shall draw up and maintain an updated list of the transport and hub entities and data intermediaries that have undergone the verification pursuant to this Article. By 31 March each year, the conformity assessment body shall notify that list to the Commission. 8. In cases where output data has already been verified under other Union legal acts laying down specific rules on the verification of output data, and ensuring compliance with the requirements laid down in this Regulation, such output data shall be deemed to have been verified pursuant to this Article. 9. The Commission shall adopt implementing acts laying down detailed rules on the verification of the output data, the appropriate frequency of that verification and the related proof of compliance. Those rules shall include provisions related to the evidence referred to in Article 10(5) and the communication rights related to the use of primary data referred to in Article 10(4). In laying down those rules, the Commission shall take due account of objective criteria, including the nature and scale of the transport service concerned, the relative risk of non-compliance, and the necessity of avoiding disproportionate administrative burdens. Those implementing acts shall be adopted in accordance with the examination procedure referred to in Article 18(2).