As each financial entity, including financial entitiesas defined in Article 2, points (a) to (t) from the same groupa group as defined in Article 2, point (11), of Directive 2013/34/EU, have their own internal taxonomy of functions depending on their specific business models and internal organisations, financial entitiesas defined in Article 2, points (a) to (t) should themselves identify relevant functions by the function identifier at individual and groupa group as defined in Article 2, point (11), of Directive 2013/34/EU level to allow for a clear monitoring between the functions of the financial entitiesas defined in Article 2, points (a) to (t) and the ICT servicesdigital and data services provided through ICT systems to one or more internal or external users on an ongoing basis, including hardware as a service and hardware services which includes the provision of technical support via software or firmware updates by the hardware provider, excluding traditional analogue telephone services.