(10)The use of common resources within a trade repository between SFT reporting services on the one hand and ancillary services or derivative reporting services on the other may lead to contagion of operational risks across services. Whereas the validation, reconciliation, processing and recordkeeping of data may require an effective operational separation to avoid such contagion of risks, practices such as a common front-end of systems, a common access point to data for authorities or the use of the same staff working in sales, compliance, or a client services helpdesk may be less prone to contagion and hence do not necessarily require operational separation. Trade repositories should therefore establish an appropriate level of operational separation between the resources, systems or procedures used in different business lines, including where those business lines comprise the provision of services subject to other Union or third country legislation, and ensure that detailed and clear information on the ancillary services, or other business lines that the trade repository offers outside its core activity of repository services under Regulation (EU) 2015/2365, is provided to ESMA in the application for registration or extension of registration.