BEAst: T5007, country code. Peppol: A code that identifies the country.The lists of valid countries are registered with the ISO 3166-1 Maintenance agency, "Codes for the representation of names of countries and their subdivisions". Codes must be according to the alpha-2 representation.

Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Data type
Code
udt:CodeType
Example value
SE
Business terms
tir01-033
Code lists
Country codes (ISO 3166-1:Alpha2)
Rules
Identifier/Error message Flag
PEPPOL-T01-B05401
Value MUST be part of code list 'Country codes (ISO 3166-1:Alpha2)'.
fatal