Suspension of tariff preference may follow persistent non compliance, with consultations to restore benefits or continue suspension. Rule 29 authorizes the importing Party to suspend the tariff preference for a product when there is persistent non compliance by an exporter, producer or manufacturer or a persistent failure of the competent authority to respond to a verification request. The exporting Party must be notified in writing of reasons within fifteen days; its competent authority may request consultations, which may include joint verification conducted by electronic means, video conference or meetings. After consultations and agreed measures, Parties may restore preferential benefits retrospectively or prospectively, or continue suspension subject to remedies in rule 30.