On the 16th February, the responsible Sub-Activity Leaders for the investigation and detailed definition of the Corridor Services sat together with other Sub-Activity Leaders responsible for the elaboration of the system concept, the legal basis for international RIS data exchange, the definition of quality requirements as well the stakeholder management. The assembly discussed and agreed on the basic work approach and cooperation procedures among the respective tasks. The template for the detailed service definition was further elaborated and will be finalised in the upcoming weeks. Next on the meeting schedule is a kind of Activity 2 Kick-Off workshop with all involved partners to share the vision of cooperation among each other and to start with the definition of the Corridor Services.