the determination of the region should take into account the country in addition to the postal code
The region is determined from the postal code, even when the postal code is located outside France.
Example of an event in Belgium whose address is :
à 16, Rue de la Loi - Wetstraat, Quartier Royal - Koninklijke Wijk - 1000 Ville de Bruxelles - Stad Brussel, Auvergne-Rhône-Alpes
The determination of the region should take into account the country in addition to the postal code.