CSMS 55054245·System update·February 10, 2023·View on csms.cbp.gov ↗

IMPORTANT: ACE Portal Platform Maintenance Set for February 11 and February 15

Plain-English explanation

CSMS 55054245 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on February 10, 2023. It carries the official CBP guidance brokers and importers must follow for the topic — "IMPORTANT: ACE Portal Platform Maintenance Set for February 11 and February 15". 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 # 55054245 - IMPORTANT: ACE Portal Platform Maintenance Set for February 11 and February 15 U.S. Customs and Border Protection sent this bulletin at 02/10/2023 12:24 PM EST Cargo Systems Messaging Service CSMS # 55054245 - IMPORTANT: ACE Portal Platform Maintenance Set for February 11 and February 15 The ACE Portal platform will undergo system maintenance on February 11 and February 15. During these planned maintenance windows, ACE Portal users will be unable to access the ACE Portal. Below are the maintenance schedule details: Date: Saturday, February 11 Start Time: 11:00 a.m. ET Estimated Duration: 1-5 minutes Date: Wednesday, February 15 Start Time: 12:00 a.m. ET Estimated Duration: 5 minutes During the maintenance windows, ACE Portal users will receive an error message indicating that the system is unavailable. Users should try logging on again when the maintenance windows are 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 55054245?

CSMS 55054245 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "IMPORTANT: ACE Portal Platform Maintenance Set for February 11 and February 15". 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 55054245 published?

CBP published CSMS 55054245 on February 10, 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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