Tips on How to Resolve AES Response Messages

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January 19, 2022

Tips on How to Resolve AES Response Messages

Fatal Error Screen - Large

When a shipment is filed to the AES, a system response message is generated and indicates whether the shipment has been accepted or rejected.  If the shipment is accepted, the AES filer receives an Internal Transaction Number (ITN) as confirmation.  Though the shipment is accepted, the filer may still receive a Verify Message, Compliance Alert, Informational Message or Warning Message along with their ITN.  However, if the shipment is rejected, a Fatal Error notification is received and must be corrected to receive a valid ITN. 

To help you take the appropriate action for the different AES Response Messages, here are some tips on how to address the most frequent messages that were generated in AES for this month.

Fatal Error Response Code: 136

Narrative:     PR to US Requires PR Port of Export

Severity:       Fatal

Reason:        The Country of Destination is reported as the Unites States and the Port of Export Code is not a Puerto Rican port.    

Resolution: A Port of Export Code must be reported on shipments from Puerto Rico to the United States and it must be a Puerto Rican port.

See Appendix D, Export Port Codes for a list of acceptable Port of Export Codes.

Verify the Country of Ultimate Destination and Port of Export Code, correct the shipment and resubmit.

Fatal Error Response Code:  331


Narrative:     Ultimate Consignee Country Unknown

Severity:       Fatal

Reason:        The Ultimate Consignee Country code reported is not valid in AES.

Resolution: The Ultimate Consignee Country code must be a valid ISO Country code found in Appendix C – ISO Country Codes.

Verify the Ultimate Consignee Country code, correct the shipment and resubmit.

AES Training Resources


For a complete list of Fatal Error Response Codes, their reasons, and resolutions, see Appendix A – Commodity Filing Response Messages.

It is important that AES filers correct Fatal Errors as soon as they are received in order to comply with the Foreign Trade Regulations. These errors must be corrected prior to export for shipments filed predeparture and as soon as possible for shipments filed postdeparture but not later than five calendar days after departure.

For further information or questions, contact the U.S. Census Bureau's Trade Data Collection Branch.

Telephone: (800) 549-0595, select option 1 for AES

Email: askaes@census.gov

Online: www.census.gov/trade

Blog: blogs.census.gov/globalreach

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