COMEX² (2023-2028) continues the successful work of the RIS COMEX project (2016-2022) by expanding and optimising the common European RIS system called EuRIS (www.eurisportal.eu) and its provided services and data on functional, technical and geographical scope for the benefits of the stakeholders. Focus is also put on making the organisational, legal and financial framework for sustainable operation of EuRIS more flexible and future fit to enable onboarding of additional partners and to ease administrative aspects. Other main objectives are to set measures towards reporting-only-once within European IWT and other common topics- as well as to ensure resilience of national RIS infrastructure.