To appropriately document the contractual arrangements between the financial entitiesas defined in Article 2, points (a) to (t) and the ICT third-party service providersmeans an undertaking providing ICT services; as required by Regulation (EU) 2022/2554, it is understood that ICT third-party service providersmeans an undertaking providing ICT services; should provide for an identification number which allows for their consistent and accurate identification by the financial entitiesas defined in Article 2, points (a) to (t) and by the ESAsEuropean Supervisory Authority, the Oversight Foruma sub-committee of the Joint Committee for the purposes of supporting the work of the Joint Committee and of the Lead Overseer in the area of ICT third-party risk across financial sectors, and the competent authoritiesas defined in Article 46, when exercising their supervisory powers, including for the designation of critical ICT third-party service providersmeans an ICT third-party service provider designated as critical in accordance with Article 31; under Article 31 of that Regulation. Concerning legal persons, the LEI and EUID are recognised international and European identifiers ensuring the consistent, unique and robust identification of companies. Consequently, either of these two identifiers should be used for the identification of the ICT third-party service providersmeans an undertaking providing ICT services; established in the Union for the purposes of the application of that Regulation and should be considered as information that is common to all contractual arrangements, whereas the ICT third-party service providersmeans an undertaking providing ICT services; established in third-countries should be identified with LEI only. The templates used for the register of information about the ICT third-party service providersmeans an undertaking providing ICT services; should require information on either of these two identifiers for ICT service providers that are legal persons, while allowing natural persons acting in the capacity of ICT service providers to use alternative identification codes.