CSMS 66924972·Operational·November 26, 2025·View on csms.cbp.gov ↗

Protecting User Data in the ACE Portal

Plain-English explanation

CSMS 66924972 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on November 26, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "Protecting User Data in the ACE Portal". 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 # 66924972 - Protecting User Data in the ACE Portal U.S. Customs and Border Protection sent this bulletin at 11/26/2025 11:44 AM EST Cargo Systems Messaging Service CSMS # 66924972 - Protecting User Data in the ACE Portal Trade Account Owners are able to restrict access to their employee data by managing permissions through “Read Only” access in the Automated Commercial Environment Secure Data Portal (ACE Portal) . For additional details and resources about these features in the ACE Portal , trade users are encouraged to review the ACE Portal Reference Sheet available at CBP.gov . For more information about ACE Portal accounts, visit the Managing an ACE Secure Data Portal Account we bpage. For technical issues, contact the CBP ACE Account Service Desk (ASD) at (866) 530 - 4172 or ace.support@cbp.dhs.gov . Related Message Number(s): CSMS # 54657364 - Add/Upload Employee Feature for Broker Reporting Now Available in Modernized ACE Portal 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 66924972?

CSMS 66924972 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Protecting User Data in the ACE Portal". 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 66924972 published?

CBP published CSMS 66924972 on November 26, 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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