CSMS 63374527·System update·December 12, 2024·View on csms.cbp.gov ↗

UPDATE: CAMIR ACE Air Import Manifest Message Line Identifiers Implementation Guide

Plain-English explanation

CSMS 63374527 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on December 12, 2024. It carries the official CBP guidance brokers and importers must follow for the topic — "UPDATE: CAMIR ACE Air Import Manifest Message Line Identifiers Implementation Guide". 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 # 63374527 - UPDATE: CAMIR ACE Air Import Manifest Message Line Identifiers Implementation Guide - CSN Remarks Field U.S. Customs and Border Protection sent this bulletin at 12/12/2024 01:10 PM EST Cargo Systems Messaging Service CSMS # 63374527 - UPDATE: CAMIR ACE Air Import Manifest Message Line Identifiers Implementation Guide - CSN Remarks Field The CAMIR ACE Air Import Manifest Message Line Identifiers Implementation Guide has been updated. The character limit for the remarks field, under the CBP Status Notification (CSN) code, has been increased from 20 characters to 60 characters. Please reach out to your Client Representative if you have any technical-related questions. For any questions about this CSMS, please email CREM@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 63374527?

CSMS 63374527 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "UPDATE: CAMIR ACE Air Import Manifest Message Line Identifiers Implementation Guide". 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 63374527 published?

CBP published CSMS 63374527 on December 12, 2024. 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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