Using an origin declaration for the UK Generalised Scheme of Preference How to make an origin declaration if you're using it as proof of origin for products using the UK Generalised Scheme of Preference. From: Contents Print this page When you can make an origin declaration An origin declaration must be made out by any exporter operating in a beneficiary country for any consignment provided that the exporter making out the origin declaration: maintains appropriate commercial accounting records concerning the production and supply of goods qualifying for preferential tariff treatment shall be prepared to provide at any time, at the request of the customs or other competent governmental authorities of the exporting country, all supporting documents or written statements from producers and suppliers which evidence a claim that the goods are originating