3.—(1) The following procedure applies to the application for a review of the amount of cover of a financial guarantee or equivalent insurance and the approval of an additional financial guarantee or equivalent insurance in accordance with Article 6(4), second paragraph.
(2) Only the notifier (or the consignee, if authorised in writing by the notifier) may apply for a review of the amount of cover and approval of a financial guarantee or equivalent insurance.
(3) He must apply to the competent authority of destination.
(4) The competent authority must ensure that its decision is issued in writing within 20 working days after the receipt of the application.