Automated export system
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Automated Export System (AES) is the system used by U.S exporters to electronically declare their international exports to the CBP (Customs and Border Protection). Formerly, this declaration was only made by the paper Shipper's Export Declaration(SED). Currently an exporter can file the export declaration electronically via AES, using AESDirect online, AESPCLink, or other software.
A SED is required when any one commodity on a given shipment exceeds $2500 in value.
The AES system uses the ICAO codes as the 3 letter airline code identifier for air exports and SCAC codes for sea and motor transport.