(56)For the purpose of the authorisation to provide banking-type ancillary services, a CSD should submit an application to the competent authority including all necessary elements to ensure that the provision of the banking-type ancillary services do not affect the smooth provision of core services of a CSD. Entities already authorised as CSDs should not be required to submit again any elements that were already submitted in the course of the process of application for being authorised as a CSD under Regulation (EU) No 909/2014.