Origin declaration authentication through electronic customs verification governs when preferential tariff treatment may be claimed. Authentication of an origin declaration is carried out through an electronic verification process between the United Kingdom customs authority and the customs authority of India. Exporters or producers must provide identity information, send the completed origin declaration to India and the Indian importer, and have the declaration matched against the Indian database of registered United Kingdom exporters and producers. If the information matches, authenticity is established and the importer may claim preferential tariff treatment; if not, the importer cannot claim that treatment and the exporter or producer may restart the process.