Les règlements communautaires ayant institué ces certificats disposent que la délivrance de ces derniers est subordonnée à la constitution d'une garantie qui garantit l'engagement d'importer ou d'exporter pendant leur durée de validité.
The Community Regulations which introduced those licences and certificates provide that they are to be issued subject to the lodging of a security so as to guarantee that the undertaking to import or export will be fulfilled during the period of their validity.