Document types along with the code to be declared and the associated class(es) for box 40.
Usage table for box 40 which lists the document types along with the code to be declared and the associated class or classes to use.
1 January 2009
HM Revenue & Customs
UK Trade Tariff: volume 3
Import and export: customs declarations, duties and tariffs
Don’t include personal or financial information like your National Insurance number or credit card details.