Find out about the the specific data elements needed for each declaration category when making an import declaration on the Customs Declaration Service.
Reading notes for Declaration Category Data Sets: CDS Declaration and Customs Clearance Request Instructions
https://www.gov.uk/guidance/declaration-category-data-sets-reading-notes-for-the-cds-uk-trade-tariff-volume-3
This appendix provides a detailed breakdown of the specific data elements needed for each declaration category.