CSMS 40429362·Operational·October 29, 2019·View on csms.cbp.gov ↗

Previous Version of ACE CATAIR Appendix B-Valid Codes Has Been Reposted

Plain-English explanation

CSMS 40429362 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on October 29, 2019. It carries the official CBP guidance brokers and importers must follow for the topic — "Previous Version of ACE CATAIR Appendix B-Valid Codes Has Been Reposted". 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 #40429362 - Previous Version of ACE CATAIR Appendix B-Valid Codes Has Been Reposted U.S. Customs and Border Protection sent this bulletin at 10/29/2019 09:18 AM EDT Cargo Systems Messaging Service CSMS #40429362 - Previous Version of ACE CATAIR Appendix B-Valid Codes Has Been Reposted The September 26, 2019 version of the Automated Commercial Environment (ACE) CBP and Trade Interface Requirements (CATAIR) Appendix B-Valid Codes has been removed and the August 22, 2019 version of the Appendix B has been reposted. For now, please resume using BU (Burma) as the country code, instead of MM (Myanmar). ACE CATAIR Appendix B-Valid Codes can be found at: https://www.cbp.gov/document/guidance/appendix-b-valid-codes-0 . 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 40429362?

CSMS 40429362 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Previous Version of ACE CATAIR Appendix B-Valid Codes Has Been Reposted". 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 40429362 published?

CBP published CSMS 40429362 on October 29, 2019. 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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