I agree with Jörg and Christian. Seems to me that vehicleOwner is better placed on the vehicle level than on the timetable. Would that work for you @Torben Brand?
Best regards, Milan
Milan Wölke – Timetable scheme coordinator
railML.org (Registry of Associations: VR 5750)
Altplauen 19h; 01187 Dresden; Germany www.railML.org