CSMS 64721388·Operational·April 11, 2025·View on csms.cbp.gov ↗

REMINDER: ACE Portal Training Guides Available on CBP.gov

Plain-English explanation

CSMS 64721388 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on April 11, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "REMINDER: ACE Portal Training Guides Available on CBP.gov". 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 # 64721388 - REMINDER: ACE Portal Training Guides Available on CBP.gov U.S. Customs and Border Protection sent this bulletin at 04/11/2025 03:54 PM EDT Cargo Systems Messaging Service CSMS # 64721388 - REMINDER: ACE Portal Training Guides Available on CBP.gov On February 22, U.S. Customs and Border Protection (CBP) completed the migration of all ACE Secure Data Portal (ACE Portal) functionality to the modernized ACE Portal. Following the migration, CBP retired the legacy ACE Portal, and all ACE Portal functionality is now only available via the modernized platform. Any links/bookmarks previously used to access the ACE Portal should be removed and replaced with the following URL: ace.cbp.gov . To help users navigate the upgraded platform, CBP published modernized ACE Portal training guides, available in the Modernized ACE Portal section of the ACE Training and Reference Guides webpage . Available guides include, but are not limited to the following: Account Types QRG User Management QRG Cross Account Access QRG For a full list of the training guides, visit the ACE Training and Reference Guides webpage . Users are encouraged to review the available training guides before contacting the CBP’s help desk to request assistance. 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 64721388?

CSMS 64721388 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "REMINDER: ACE Portal Training Guides Available on CBP.gov". 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 64721388 published?

CBP published CSMS 64721388 on April 11, 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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