(6)The use of common resources within a trade repository for derivatives reporting services on the one hand and ancillary services or reporting services for securities financing transactions on the other, may lead to contagion of operational risks across those services. The validation, reconciliation, processing and recordkeeping of data may require an effective operational separation to avoid such contagion of risks. However, certain 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. That separation should include business lines that provide services subject to other Union legislation or third country legislation. It should also ensure that the application for registration contains detailed and clear information on the ancillary services, or on other business lines that the trade repository offers outside its core activity of repository services under Regulation (EU) No 648/2012.