Countries in international trade in services and balance of payments, v1:2017
EBOPS is incorporated as a nomenclature in the EU balance of payments regulation etc. cf. above, which is based on the ISO 3166-1 alpha-2 standard.
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/lande-uht-bb?id=dda121e4-1da1-4b60-930e-c6fd02e4ab78