Which document is essential for proving the contents of a shipment in export?

The commercial invoice is essential for proving the contents of a shipment in export because it provides a detailed account of the goods being shipped. This document includes vital information such as the description of items, their quantity, value, and the terms of sale. It serves as a formal agreement between the buyer and seller and is often used by customs authorities to assess duties and tariffs.

Having accurate documentation of the items being exported helps to ensure compliance with international trade regulations and facilitates the clearance process at customs. The commercial invoice is usually required by both the exporting and importing countries, making it a crucial document in international shipping transactions.