Feedback from ERTMS projects shows that ERTMS interoperability constituents and subsystems contain restrictions and specific conditions of use. The Control Command and Signalling (CCS) Technical Specification for Interoperability (TSI) requires that such information should be provided during the certification process.
CCS TSI (EU) 2023/1695 requires in sections 6.5.1, 6.5.2 to use a mandatory template defined in Appendix D. This template can be found here and the related guidance on its use here.