Division 7 Formal arrangements with the following minimum content shall be established with neighbouring air navigation service providers that are establishing individual aircraft identification by using discrete SSR codes:

an obligation on the neighbouring air navigation service providers to transfer aircraft with verified discrete SSR codes assigned in compliance with a code allocation list agreed by F1the United Kingdom and Member States and coordinated with European third countries;

an obligation to notify accepting units about any observed irregularity in the operation of airborne constituents of surveillance systems.