Subsystems lists services and service descriptions offered by organisations that have joined the Suomi.fi Data Exchange Layer. A subsystem is used to provide services through the Data Exchange Layer and connect systems that are used for consuming services to the Data Exchange Layer.
If you wish to implement a service that is listed in the API Catalogue, read our instructions on implementing services and contact the service provider.
The Finnish Trade Register is an official and public register of companies, businesses, housing companies and tenant-owners' societies. The Trade Register details are available from the PRH Virre Information Service. Through the Virre interface, you can search for information by Business ID.