the official registration number, which shall include the two-letter code indicated in norm ISO 3166-1-alpha-2 [27] for the Member State in which the professional operator is registered;
an uimhir chlárúcháin oifigiúil, a áireoidh an cód dhá litir léirithe i bhfoirm ISO 3166-1-alpha-2 [27] don Bhallstát ina bhfuil an t-oibreoir gairmiúil cláraithe;