Given that the classification criteria are interdependent and linked to each other, the approach for identifying major incidents which are to be reported in accordance with Article 19(1) of Regulation (EU) 2022/2554 should be based on a combination of criteria, where some criteria that are closely related to the definitions of an ICT-related incidenta single event or a series of linked events unplanned by the financial entity that compromises the security of the network and information systems, and have an adverse impact on the availability, authenticity, integrity or confidentiality of data, or on the services provided by the financial entity and a major ICT-related incidentan ICT-related incident that has a high adverse impact on the network and information systems that support critical or important functions of the financial entity set out in Article 3(8) and (10) of Regulation (EU) 2022/2554 should have more prominence in the classification of major incidents than other criteria.