CSMS 64255764·Operational·February 27, 2025·View on csms.cbp.gov ↗

REMINDER: ACE Portal Access Management Post

Plain-English explanation

CSMS 64255764 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on February 27, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "REMINDER: ACE Portal Access Management Post". 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 # 64255764 - REMINDER: ACE Portal Access Management Post-deployment Support Call Today at 2:00 p.m. ET U.S. Customs and Border Protection sent this bulletin at 02/27/2025 11:27 AM EST Cargo Systems Messaging Service CSMS # 64255764 - REMINDER: ACE Portal Access Management Post-deployment Support Call Today at 2:00 p.m. ET On February 22, 2025, U.S. Customs and Border Protection (CBP) migrated all ACE Portal user access functionality to the modernized ACE Portal. CBP will host a post-deployment support call today to provide information and address any open trade user questions. Below is the information needed to join the call: Date: February 27, 2025 Time: 2:00 p.m. ET Link: Trade User Post-deployment Support Call For additional information, review the Trade User Information Notice . 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 64255764?

CSMS 64255764 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "REMINDER: ACE Portal Access Management Post". 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 64255764 published?

CBP published CSMS 64255764 on February 27, 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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