The SDMX description: 'Represents a combination of reference area codes in the [United Nations] [M49](https://unstats.un.org/unsd/methodology/m49/) and [ISO-3166](https://www.iso.org/iso-3166-country-codes.html) classifications.'
The SDMX description: 'Represents a combination of reference area codes in the [United Nations] M49 and ISO-3166 classifications.'