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400 - Invalid Country Code
The
invalid_country_code error will be returned if you provide an invalid value for a country ISO code.This error code will be returned, for example, if you provide an unrecognised country ISO code, or an invalid format country ISO code.
The
country_iso_code value must be 2 characters and must identify a valid country, e.g.: - GB - US - DE - FR - IT - AT