CSMS 49667447·System update·October 4, 2021·View on csms.cbp.gov ↗

ACE PRODUCTION Scheduled Maintenance, Harmonized System Update (HSU) 2109

Plain-English explanation

CSMS 49667447 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on October 4, 2021. It carries the official CBP guidance brokers and importers must follow for the topic — "ACE PRODUCTION Scheduled Maintenance, Harmonized System Update (HSU) 2109". 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 #49667447 - ACE PRODUCTION Scheduled Maintenance, Harmonized System Update (HSU) 2109 U.S. Customs and Border Protection sent this bulletin at 10/04/2021 11:40 AM EDT Cargo Systems Messaging Service CSMS #49667447 - ACE PRODUCTION Scheduled Maintenance, Harmonized System Update (HSU) 2109 Update 2109 was created 09/29/21 and included 477 ABI records and 99 Harmonized records. Questions or concerns should be directed to Cargo, Control and Release / International Trade Data System (ITDS) at agile-team-3@cbp.dhs.gov . 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 49667447?

CSMS 49667447 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "ACE PRODUCTION Scheduled Maintenance, Harmonized System Update (HSU) 2109". 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 49667447 published?

CBP published CSMS 49667447 on October 4, 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.

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.