CSMS 46801323·System update·March 29, 2021·View on csms.cbp.gov ↗

Completed CBP ACE Emergency Maintenance at 3:30 ET

Plain-English explanation

CSMS 46801323 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on March 29, 2021. It carries the official CBP guidance brokers and importers must follow for the topic — "Completed CBP ACE Emergency Maintenance at 3:30 ET". 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 #46801323 Completed-CBP ACE Emergency Maintenance at 3:30 ET 3/29/2021 U.S. Customs and Border Protection sent this bulletin at 03/29/2021 04:57 PM EDT Cargo Systems Messaging Service CSMS #46801323 Completed-CBP ACE Emergency Maintenance at 3:30 ET 3/29/2021 Maintenance on the ACE system is completed, messages are being processed however we are still seeing delays with Ocean, Rail, Air and QP/WP inbond notifications and responses. Another CSMS will be issued when this is resolved. 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 46801323?

CSMS 46801323 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Completed CBP ACE Emergency Maintenance at 3:30 ET". 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 46801323 published?

CBP published CSMS 46801323 on March 29, 2021. 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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