CSMS 64366327·System update·March 10, 2025·View on csms.cbp.gov ↗

ACE Entry Summary Create/Update CATAIR Updated with Aluminum Smelt and Cast and Steel Melt and Pour Changes

Plain-English explanation

CSMS 64366327 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on March 10, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "ACE Entry Summary Create/Update CATAIR Updated with Aluminum Smelt and Cast and Steel Melt and Pour Changes". 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 # 64366327 - ACE Entry Summary Create/Update CATAIR Updated with Aluminum Smelt and Cast and Steel Melt and Pour Changes U.S. Customs and Border Protection sent this bulletin at 03/10/2025 12:04 PM EDT Cargo Systems Messaging Service CSMS # 64366327 - ACE Entry Summary Create/Update CATAIR Updated with Aluminum Smelt and Cast and Steel Melt and Pour Changes U.S. Customs and Border Protection (CBP) has updated the Automated Commercial Environment (ACE) Entry Summary Create/Update CATAIR (v103) with the following changes: For the 54-record, Type 07 (Aluminum Smelt and Cast Country Detail): Updated introductory text to remove reporting requirement for regular aluminum on the Generally Approved Exclusion (GAE) list. For the 54-Record, Type 08 (Steel Melt and Pour Country Detail): Updated introductory text and date element descriptions to indicate that reporting of the Country of Melt and Pour and Applicability Code are mandatory for both steel and steel derivatives. The ACE Entry Summary Create/Update CATAIR (v103) is currently posted under the “Chapters: Current Capabilities” section of CBP’s CATAIR webpage . These updates will be available in the Certification and Production environments on March 12, 2025. For technical questions regarding this update, contact your assigned CBP Client Representative. Other questions or concerns should be directed to the Entry Summary Accounts & Revenue Division (ESAR) at esar@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 64366327?

CSMS 64366327 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "ACE Entry Summary Create/Update CATAIR Updated with Aluminum Smelt and Cast and Steel Melt and Pour Changes". 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 64366327 published?

CBP published CSMS 64366327 on March 10, 2025. 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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