CSMS 64194490·Operational·February 21, 2025·View on csms.cbp.gov ↗

REMINDER: ACE Portal Modernization: Legacy ACE Platform Retires February 22

Plain-English explanation

CSMS 64194490 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on February 21, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "REMINDER: ACE Portal Modernization: Legacy ACE Platform Retires February 22". 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 # 64194490 - REMINDER: ACE Portal Modernization: Legacy ACE Platform Retires February 22 U.S. Customs and Border Protection sent this bulletin at 02/21/2025 01:13 PM EST Cargo Systems Messaging Service CSMS # 64194490 - REMINDER: ACE Portal Modernization: Legacy ACE Platform Retires February 22 On February 22, 2025, U.S. Customs and Border Protection (CBP) will migrate Automated Commercial Environment Secure Data Portal (ACE Portal) account user access management functionality to the modernized ACE Portal. Following this deployment, CBP will retire the legacy ACE Portal . Beginning February 23, users will conduct all ACE Portal activities in the modernized ACE Portal. On February 27, TTO will host a post deployment support call for ACE Portal users, including a demo of account user access management functionality. The call will begin at 2pm ET and can be joined using Microsoft Teams . For more information about the modernized ACE Portal, visit the ACE Portal Modernization webpage .  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 64194490?

CSMS 64194490 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "REMINDER: ACE Portal Modernization: Legacy ACE Platform Retires February 22". 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 64194490 published?

CBP published CSMS 64194490 on February 21, 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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