CSMS 54280073·System update·December 15, 2022·View on csms.cbp.gov ↗

REMINDER: ACE Production Invasive Maintenance Window MOVED to December 18-19

Plain-English explanation

CSMS 54280073 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on December 15, 2022. It carries the official CBP guidance brokers and importers must follow for the topic — "REMINDER: ACE Production Invasive Maintenance Window MOVED to December 18-19". 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 # 54280073 - REMINDER: ACE Production Invasive Maintenance Window MOVED to December 18-19 U.S. Customs and Border Protection sent this bulletin at 12/15/2022 09:00 AM EST Cargo Systems Messaging Service CSMS # 54280073 - REMINDER: ACE Production Invasive Maintenance Window MOVED to December 18-19 There will be NO standard scheduled weekend maintenance on Saturday, December 17, 2022, for the Automated Commercial Environment (ACE) Production (PROD) environment. Instead, ACE will have an out-of-cycle invasive maintenance window, starting on Sunday, December 18, 2022, at 10:00 pm ET. The out-of-cycle invasive maintenance will end on December 19, 2022, at 4:00 am ET. During this window, the ACE Portal will be completely unavailable. Additionally, all ACE Electronic Data Interchange (EDI) queues, except for Manifest submissions, will be inhibited until the conclusion of the maintenance window. Related message: #54269554 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 54280073?

CSMS 54280073 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "REMINDER: ACE Production Invasive Maintenance Window MOVED to December 18-19". 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 54280073 published?

CBP published CSMS 54280073 on December 15, 2022. 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.

Learn more

Tandom guides relevant to CBP CSMS messages

Subscribe to and triage CBP CSMS messages

How to subscribe to CBP Cargo Systems Messaging Service and triage the messages that change broker filing behavior, without losing the ones that matter.

Open resource

Real-time alerts when a CSMS message changes a duty rate

Set up alerts when a CBP CSMS message changes a duty rate on an HTS code you depend on. Built for brokers, forwarders, and importer compliance teams.