CSMS 64956194·Operational·May 6, 2025·View on csms.cbp.gov ↗

Update to Automated Export System (AES) Appendix F – Update to C65 and C75 License Type Codes

Plain-English explanation

CSMS 64956194 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on May 6, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "Update to Automated Export System (AES) Appendix F – Update to C65 and C75 License Type Codes". 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 # 64956194 - Update to Automated Export System (AES) Appendix F – Update to C65 and C75 License Type Codes U.S. Customs and Border Protection sent this bulletin at 05/06/2025 09:27 AM EDT Cargo Systems Messaging Service CSMS # 64956194 - Update to Automated Export System (AES) Appendix F – Update to C65 and C75 License Type Codes Update to the Automated Export System Trade Interface Requirements – Appendix F has been posted to CBP.gov. The following license type codes have been updated: License Code : C65 Removed 3A991 ECCN Added 3B991 ECCN License Code : C75 Added 5A002.z Documentation is available under the ACE AESTIR Appendix F - License and License Exemption Type Codes webpage which can be located at: https://www.cbp.gov/document/guidance/aestir-appendix-f-license-and-license-exemption-type-codes . 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 64956194?

CSMS 64956194 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Update to Automated Export System (AES) Appendix F – Update to C65 and C75 License Type Codes". 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 64956194 published?

CBP published CSMS 64956194 on May 6, 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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