EXPP1020 - Export Procedures - HMRC internal manual
EXPP1020 - Introduction: coverage The Customs Handling of Import and Export Freight CHIEF and Customs Declaration Servic (CDS) exports systems are essentially data capture and validation systems. CHIEF and CDS support the National Export System (NES) by providing an electronic gateway for making full and simplified export procedure declarations. The UK Tariff and GOV.UK webpages provide information and advice for making electronic export declarations onto CHIEF/CDS for the following: Standard Full Declaration procedure Entry in Declarants records (EIDR) Customs Supervised Exports(CSE)
Source: gov.uk