CSMS 55438874·System update·March 10, 2023·View on csms.cbp.gov ↗

Harmonized System Updates (HSU) 2304 / ACE Harmonized Tariff Schedule (HTS) Deployment

Plain-English explanation

CSMS 55438874 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on March 10, 2023. It carries the official CBP guidance brokers and importers must follow for the topic — "Harmonized System Updates (HSU) 2304 / ACE Harmonized Tariff Schedule (HTS) Deployment". 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 # 55438874 - Harmonized System Updates (HSU) 2304 / ACE Harmonized Tariff Schedule (HTS) Deployment U.S. Customs and Border Protection sent this bulletin at 03/10/2023 01:45 PM EST Cargo Systems Messaging Service CSMS # 55438874 - Harmonized System Updates (HSU) 2304 / ACE Harmonized Tariff Schedule (HTS) Deployment Harmonized System Update (HSU) 2304 was created on March 9, 2023, and contains 77 ABI records and 18 Harmonized Tariff Records. This update includes the Section 232 additional duties on imports of aluminum and derivative aluminum products from Russia. For additional information on the Section 232 additional duties on Russian aluminum please refer to proclamation 88 FR 13267 . HSU 2304 also includes changes to HTS flagging. In support of the PGA Message Set, Participating Government Agency (PGA), 5 APH indicators, and 1 FDA indicator were updated. Additionally, with the upcoming ACE HTS deployment in May 2023, we recommend testing in ACE Certification. Questions or concerns with the Harmonized System Update should be directed to Entry Summary, Accounts & Revenue Division (ESAR) at esar@cbp.dhs.gov . Questions or concerns for PGA HTS Flagging should be emailed to itdssupport@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 55438874?

CSMS 55438874 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Harmonized System Updates (HSU) 2304 / ACE Harmonized Tariff Schedule (HTS) Deployment". 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 55438874 published?

CBP published CSMS 55438874 on March 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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