Verification of Certificates of Origin: importing authority may seek information and exporting authority assistance to confirm authenticity and accuracy. Verification of Certificates of Origin allows an importing competent authority to determine authenticity and accuracy by requesting information from the importer, seeking assistance from the exporting Party's competent authority, issuing questionnaires to exporters or producers, conducting visits to their premises, or using other agreed procedures; when assistance is sought the importing authority must state reasons, provide the Certificate of Origin or copy and necessary documents, and, where origin is in doubt, supply detailed grounds, and these verification procedures also apply to products already cleared under preferential tariffs.