CSMS 55104039·System update·February 14, 2023·View on csms.cbp.gov ↗

REMINDER: ACE Portal Platform Maintenance Set for Tonight

Plain-English explanation

CSMS 55104039 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on February 14, 2023. It carries the official CBP guidance brokers and importers must follow for the topic — "REMINDER: ACE Portal Platform Maintenance Set for Tonight". 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 # 55104039 - REMINDER: ACE Portal Platform Maintenance Set for Tonight U.S. Customs and Border Protection sent this bulletin at 02/14/2023 04:46 PM EST Cargo Systems Messaging Service CSMS # 55104039 - REMINDER: ACE Portal Platform Maintenance Set for Tonight T he ACE Portal platform will undergo system maintenance on Wednesday, February 15 at 12:00 a.m. ET. During this planned maintenance window, ACE Portal users will be unable to access the ACE Portal. The estimated maintenance duration will be five minutes. During the maintenance window, ACE Portal users will receive an error message indicating that the system is unavailable. Users should try logging on again when the maintenance window is complete. If users are unable to access the ACE Portal following the maintenance window, please close your browser, clear your cache, and try again. 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 55104039?

CSMS 55104039 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "REMINDER: ACE Portal Platform Maintenance Set for Tonight". 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 55104039 published?

CBP published CSMS 55104039 on February 14, 2023. 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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