(2)In order to minimise additional operational costs for market participants, the rules for the registration of securitisation repositories, including the rules for registration by means of an extension of registration for the purposes of Article 7 of Regulation (EU) 2017/2402, should build on existing infrastructures, operational processes and formats introduced in connection with the reporting of securities financing transactions and derivative contracts. The rules on registration should, however, also reflect the specificities of securitisations, including complexities associated with hosting securitisation data and documentation and should reflect recent market developments, such as the common use of Legal Entity Identifiers, which improves the organisation and classification of information on legal entities to be provided in the application. For clarity and ease of reference for applicants, it is also desirable for the rules on registration to follow the order of the relevant requirements in Regulation (EU) 2017/2402.