Confirm your role and the reference data every message relies on.
Assessment scope
Setup - Roles & Reference Data. Before a single message is exchanged or a timetable published, all stakeholders in this domestic–cross-border passenger service - the lead railway undertaking, the partner RU, the first infrastructure manager, the second infrastructure manager, the ticket distributor, and the ticket retailer - must hold validated identifiers and understand their TEL TSI roles.
Governing articles & annex points
The 5 questions in this module are judged against these provisions of Commission Implementing Regulation (EU) 2026/253. Each reference opens the official text in the EU Official Journal on EUR-Lex.
Source transparency: inside the assessment, every verdict cites its exact article or annex point - the references above are extracted from this module’s question set, not written for marketing.