Having the right document will speed up the customs process and avoid delays. Some documents like import customs entry, invoice and packing list are compulsory for most shipments. Origin statement is important where you want to claim duty preference. VAT statement is for allowing us to do postpone VAT on your import shipments. whereas documents like CMR are issued by transport company to show route map of cargo journey. Every documents has a purpose and its important to attach correct document with entry for quick release of good.