The provisions in this Regulation are closely linked, since they all deal with supervisory requirements involving central securities depositories (CSDs). To ensure coherence between those provisions, and to facilitate a comprehensive view and compact access to them by persons subject to those obligations, it is desirable to include all the implementing technical standards required by Article 17(10), Article 22(11), Article 24(8), Article 29(4), Article 33(6), Article 49(6), Article 52(4), Article 53(5) and Article 55(8) of Regulation (EU) No 909/2014 in a single Regulation.

Any information submitted to the competent authority in a CSD's application for authorisation as well as for the purposes of review and evaluation should be provided in a durable medium.

In order to facilitate quick identification of the information submitted by a CSD, all documents provided to the competent authority, including those provided with an application for authorisation, should bear a unique reference number. Information submitted as part of the process of review and evaluation of the CSDs' activities should contain precise indications of the changes to the documents that have been submitted during that process.

In order to facilitate the cooperation between authorities where CSDs provide cross-border activities or set up branches, it is necessary to provide for harmonised standards, forms and procedures for such cooperation.

To carry out their duties effectively and consistently, the authorities authorised to have access to the records of CSDs in accordance with Regulation (EU) No 909/2014 should be provided with data that is comparable across CSDs. In addition, the use of common formats across different financial market infrastructures should facilitate the greater use of those formats by a wide variety of market participants, thus promoting standardisation. Standardised procedures and data formats across CSDs should reduce as well the costs for market participants and facilitate the tasks of supervisors and regulators.

In order to ensure a harmonised approach regarding the processing of complaints concerning the access of participants to CSDs, the access of issuers to CSDs, the access between CSDs, and the access between a CSD and another market infrastructure, standard forms and templates should be used, specifying the identified risks and the assessment of the identified risks that justify a refusal of access.

In order to facilitate the consultation by the competent authority of a CSD with other authorities involved referred to in Regulation (EU) No 909/2014 prior to granting or refusing authorisation to provide banking-type ancillary services, it is necessary to provide for an effective and structured process for consultation. To facilitate the timely cooperation of the authorities concerned and allow each of them to provide a reasoned opinion concerning the application, the documents and data attached to an application should be organised according to common templates.

With a view to ensuring legal certainty and a consistent application of the law, certain requirements provided for in this Regulation concerning settlement discipline measures should start to apply from the date of entry into force of those measures.

This Regulation is based on the draft implementing technical standards submitted by the European Securities and Markets Authority (ESMA) to the Commission.