CSMS 69602757·System update·August 21, 2026·View on csms.cbp.gov ↗

ACE Manifest Modernization Release 2-Rail (INT-061) is in Certification Environment for Testing and Scheduled to Deploy to Production September 22, 2026

Plain-English explanation

CSMS 69602757 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on August 21, 2026. It carries the official CBP guidance brokers and importers must follow for the topic — "ACE Manifest Modernization Release 2-Rail (INT-061) is in Certification Environment for Testing and Scheduled to Deploy to Production September 22, 2026". 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

Cargo Systems Messaging Service CSMS # 69602757 - ACE Manifest Modernization Release 2-Rail (INT-061) is in Certification Environment for Testing and Scheduled to Deploy to Production September 22, 2026 U.S. Customs and Border Protection is modernizing the Automated Commercial Environment (ACE) ocean, rail, and air manifest systems over several releases. The second release of this enhancement (INT-061) is a technical migration of back-end functionality for the rail mode of transportation. It will not directly affect the ACE user experience or Electronic Data Interchange (EDI) behavior. This second release of the manifest modernization enhancement is currently in the ACE certification environment (CERT). Trade software developers may send transmissions to confirm expected responses. Deployment to the ACE production environment (PROD) is scheduled for September 22, 2026. For technical questions regarding this enhancement, please contact your assigned Client Representative. Other questions regarding Cargo Control and Release should be directed to CREM@cbp.dhs.gov .

Frequently asked questions

What is CSMS 69602757?

CSMS 69602757 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "ACE Manifest Modernization Release 2-Rail (INT-061) is in Certification Environment for Testing and Scheduled to Deploy to Production September 22, 2026". 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 69602757 published?

CBP published CSMS 69602757 on August 21, 2026. 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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