Shipper’s Export Declaration (SED) used to be an export document that was required for accompanying shipments from the United States to abroad. SEC served as a record of US exports and was used by customs and for compiling trade statistics.
Each shipment above 2,500 USD per Schedule B code in the US should have included Shippers’ Export Declaration.
In 2008, the Shippers’ Export Declaration (SED) was replaced by filing Electronic Export Information (EEI) through Automated Export System (AES). And after 2015 all the EEI filings should be done through the Automated Commercial Environment (ACE).