The quality of the DSCR data on suppliers is checked each year using the values contained in INSEE's Sirene database as a reference.
The business category in the DSCR is taken from the latest INSEE Sirus reference system available at the time the DSCR was created. It is calculated according to the INSEE methodology contained in the methodological note.
https://www.defense.gouv.fr/sga/le-sga-en-action/economie-et-statistiques/qualite-statistique/operations-stats