Plant Passport

 My box of mandarins has a plant passport:

https://database.globalgap.org/globalgap/search/SearchMain.faces

The letter ‘A’ followed by the botanical name of the plant species in question.

The letter ‘B’ followed by the ISO code of the Member State of the producer, followed by a hyphen and the phytosanitary registration number of the professional operator; you can find more information here. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32017R2313

The letter ‘C’ followed by the plant’s traceability code. This may be supplemented with a QR code, hologram, chip or other data carrier belonging to the traceability code.

The letter ‘D’ followed by the ISO code of the country of origin or production.