List Countries
The country codes accepted in a relation’s address.country_code.
The row set is the list the API actually validates against (the Peppol code list, see
app/countries.py), not the translation table: a list that offered a code the API refuses
— or hid one it accepts — would be worse than useless. The two differ by a handful of
codes, whose label is therefore null until Fidly has a translation for them.
Authorizations
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Query Parameters
Language the labels are returned in, one of ['fr', 'en', 'nl', 'de']. Required: a list of codes with no wording to display them is of no use, and there is no sensible language to pick on the caller's behalf.