Following the DECISION COP4/2, the Parties submitted information on the administrative units within which each Party implements or plans to implement the Carpathian Convention and its Protocols. Collection of all the units allowed the Environmental European Agency (EEA) and the European Topic Centre on Urban, Land, and Soil Systems, the Convention’s long-lasting partners, to produce an interactive map of the Carpathian administrative units. The database is composed by a selection of different administrative units (NUTS2, NUTS3, LAU2, LAU1) from the Eurogeographic product EuroBoundaryMaps v.10. Further to the DECISIONS COP5/5, the information gathered on the administrative units shall be published and disseminated.