National Land Survey of Finland has used GeoNetwork https://www.geonetwork-opensource.org/ for more than a decade to provide spatial data and service providers in Finland a platform for maintenance of their metadata. More than a hundred user groups have described spatial data sets and services in the metadata catalogue, which is called Paikkatietohakemisto https://www.paikkatietohakemisto.fi/geonetwork/srv/fin/catalog.search#/home. The metadata published are widely reused in other web sites and services, such as https://www.opendata.fi/en.

If you want to learn from our experiences, come and listen to this presentation during which we'll tell you:

• How we managed to transfer from one INSPIRE metadata standard to another in co-operation with data providers and

• How we by summer 2024 managed to transfer from GN version 3.12 to 4, summarising the challenges and opportunities we faced.