1. The undertakings given by the guarantors shall be cancelled or the sums deposited shall be reimbursed on the basis of the certificate of discharge given by the customs officers.
2. The Director General of Customs and Excise may, in order to prevent fraud, make the discharge of sureties given to guarantee the export or re-export of certain goods subject to the production of a certificate issued by the French or foreign authorities, which he shall designate, establishing that the said goods have received the required destination.