

AES Response Types
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001-020 - Fatal Errors (Transmission) [View Messages]
These messages (001-020) occur when an error exists in the transmission or translation of the data from the transmitter to AES. The entire transmission will be rejected if an error message 001 to 020 is generated.
021-300 - Fatal Errors (Commodity Data) [View Messages]
These messages occur when the Exporter, or the Forwarding Agent, Data Entry Center, Carrier or NVOCC acting on behalf of the Exporter, has reported the export shipment information with errors. These fatal error messages will result in a rejected shipment, unless they are corrected and resubmitted.
300-600 - Warning and Informational Messages [View Messages]
308-318
These error messages will not cause a rejection of the transmission. However, if the information is not correctly re-submitted into AES prior to the exporting carrier receiving the goods, the shipment will automatically be held.
319-375
These warning and informational messages will not result in a rejected transmission. However, if the transmitter receives a warning message, a correction is required prior to the goods departing the port or up to the fourth day after departure. The informational messages should be responded to if indeed an error exists. Attempts to continuously ignore these warning and informational messages will be audited and violators may be subject to fines and/or penalties.
800's - Census Verify and Warning Messages [View Messages]
The U.S. Customs Service has incorporated the Bureau of Census export parameters, or statistical averages as commodity price ranges, destination countries, quantity-to-quantity ratios, and more, into the Automated Export System (AES). Census error messages result when discrepancies occur between what Census usually finds for a particular commodity and the data given on an export shipment transmission. Census error messages do not always mean an export shipment transmission is in error, just that the information given is unlikely to be true. If the messages do indicate errors, the export information must be corrected. If, however, the ‘unlikely’ information is true, no changes need be made to the export shipment transmission.
Note: Six Census error messages are warnings and require responses.
900's [View Messages]
These messages occur when the Exporter, or Forwarding Agent, Carrier or NVOCC acting on behalf of the Exporter, submits data. These messages accompany the specific fatal error, verify or warning messages described above.
R01-R05 - Reminders [View Messages]
These reminder messages are sent to filers to remind them of warnings that have not been corrected in the 4-days after exportation of the shipment. Failure to respond to these 4-day reminder messages may delay the exportation of merchandise on future shipments. Additionally, these messages are sent to remind AES-PASS filers to report post-departure information on a timely basis.