Recital 85

As a rule, all written communication between competent authorities or between competent authorities and designated establishments or legal representatives should be carried out through the decentralised IT system. It should be possible to use alternative means only where the use of the decentralised IT system is not possible, for example because of specific forensic requirements, because the volume of data to be transferred is hampered by technical capability constraints, or because another establishment not connected to the decentralised IT system has to be addressed in an emergency case. In such cases, the transmission should be carried out by the most appropriate alternative means, taking into account the need to ensure a swift, secure and reliable exchange of information.