CSMS 63644218·Operational·January 7, 2025·View on csms.cbp.gov ↗

Updates to the AES Commodity Filing Response Messages – Appendix A: Response Code 5C2/5C3

Plain-English explanation

CSMS 63644218 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on January 7, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "Updates to the AES Commodity Filing Response Messages – Appendix A: Response Code 5C2/5C3". CSMS messages are the operational layer between Commerce determinations and at-the-border collections: when Commerce publishes a new rate, scope ruling, or instruction, CBP turns it into a CSMS that ACE/ACS systems and brokers act on.

Message body

Full text as published by U.S. Customs and Border Protection

CSMS # 63644218 - Updates to the AES Commodity Filing Response Messages – Appendix A: Response Code 5C2/5C3 U.S. Customs and Border Protection sent this bulletin at 01/07/2025 10:09 AM EST Cargo Systems Messaging Service CSMS # 63644218 - Updates to the AES Commodity Filing Response Messages – Appendix A: Response Code 5C2/5C3 U.S. Customs and Border Protection (CBP) recently published the following updates to the Automated Export System Trade Interface Requirements – Appendix A : Response Code: 5C2 Narrative Text: CAT XXI DETERMINATION NBR UNKNOWN Severity: FATAL Proprietary Record ID/Data Elements: Input ODT Record/DDTC Commodity Jurisdiction (CJ) Number X.12 Segment ID/Data Elements: X117 Reason: The License Code/USML Category XXI Code declared is one that requires a DDTC Category XXI determination number on the ODT record either reported empty, unknown or the Date of Export is greater than the superseded date in AES. Resolution: The DDTC Category XXI determination number reported on the ODT record must be a known value in AES. Verify, correct, and retransmit. If DDTC has advised your commodity export is classified in Category XXI, but you do not have a unique case number, you may contact the DDTC Response Team for assistance at ddtccustomerservice@state.gov or (202) 663-1282. Response Code: 5C3 Narrative Text: DDTC USML CATEG 55 NOT ELIG FOR LIC TYPE Severity: FATAL Proprietary Record ID/Data Elements: Input CL1 Record/License Code/License Exemption Code; Input ODT Record/DDTC USML Category Code X.12 Segment ID/Data Elements: X105; X107 Reason: The DDTC USML Category Code 55 (Articles Not Listed in the International Traffic in Arms Regulations (ITAR)), may not be used with License Code/License Exemption Code entered. Resolution: When the DDTC USML Category Code 55 (Articles Not Listed in the International Traffic in Arms (ITAR)) is reported but is not available for use with the License Code/License Exemption Code entered. See ‘Appendix L- DDTC USML Category Codes’ to determine the category code to report. For further assistance, contact the licensing agency. The Response Team at the Department of State’s Directorate of Defense Trade Controls can be reached for this purpose at 202-663-1282 or ddtccustomerservice@state.gov . Correct and retransmit. For a full listing of AES Response Codes, please visit Appendix A of the Automated Export System Trade Interface Requirements (AESTIR). If additional clarification is needed on this topic or any other programming or technical matters, contact the U.S. Census Bureau’s Trade Data Collection Branch at (800) 549-0595, Option 1, or by email at emd.askaes@census.gov . Update your subscriptions, modify your password or e-mail address, or stop subscriptions at any time on your Subscriber Preferences Page . You will need to use your e-mail address to log in. If you have questions or problems with the subscription service, please contact subscriberhelp.govdelivery.com . This service is provided to you at no charge by U.S. Customs and Border Protection . Privacy Policy | GovDelivery is providing this information on behalf of U.S. Department of Homeland Security, and may not use the information for any other purposes. Powered by Privacy Policy | Cookie Statement | Help

Frequently asked questions

What is CSMS 63644218?

CSMS 63644218 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Updates to the AES Commodity Filing Response Messages – Appendix A: Response Code 5C2/5C3". CSMS bulletins are the operational instructions CBP issues to brokers, importers, and ACE filers covering rate changes, system updates, scope guidance, and other day-to-day customs-operations changes.

When was CSMS 63644218 published?

CBP published CSMS 63644218 on January 7, 2025. The bulletin's instructions are typically operative as of the publication date unless the body specifies a different effective date.

Is the CBP CSMS the legally binding instruction?

Yes — for at-the-border filing and entry collection. CSMS messages translate Commerce's Federal Register determinations into operational CBP instructions that ACE/ACS systems and brokers execute. The Federal Register notice is the underlying legal authority; the CSMS is the operational implementation. Both should be read together when reconciling a rate or scope change.

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