CSMS 55364804·System update·March 5, 2023·View on csms.cbp.gov ↗

ACE Emergency Maintenance Activity at 3 pm on 3/5/23

Plain-English explanation

CSMS 55364804 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on March 5, 2023. It carries the official CBP guidance brokers and importers must follow for the topic — "ACE Emergency Maintenance Activity at 3 pm on 3/5/23". 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 # 55364804 - ACE Emergency Maintenance Activity at 3 pm on 3/5/23 U.S. Customs and Border Protection sent this bulletin at 03/05/2023 02:37 PM EST CBP needs to perform some emergency maintenance activities on 3/5/2023 from 3 pm - 3:30 pm. During this period Entry and Entry Summary EDI message processing will be delayed. Manifest messages will not be affected. Trade is advised to not submit replacements to attempt expediting message flow. Another CSMS will be sent upon resolution. Please call ABI Reps or CBP ACE helpdesk for any questions. 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 55364804?

CSMS 55364804 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "ACE Emergency Maintenance Activity at 3 pm on 3/5/23". 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 55364804 published?

CBP published CSMS 55364804 on March 5, 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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