The only formal requirement is to store information on characteristics needed to complete the common output and any programme-specific indicators for all individual entities supported. However, it should always be possible to demonstrate that reported numbers of supported entities correspond to identifiable organisations that have received support and (if necessary) follow-up entities. Therefore, it is necessary to maintain some basic identifying information about each entity (e.g. organisation name/address or company number). Entities record should have as a minimum: entity identifier, start and leaving dates, data for indicators, operation identifier.