CSMS 64530388·System update·March 25, 2025·View on csms.cbp.gov ↗

REMINDER: ACE Reports: No Data Updates from March 28 to April 2 Due to Software Upgrade

Plain-English explanation

CSMS 64530388 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on March 25, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "REMINDER: ACE Reports: No Data Updates from March 28 to April 2 Due to Software Upgrade". 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 # 64530388 - REMINDER: ACE Reports: No Data Updates from March 28 to April 2 Due to Software Upgrade U.S. Customs and Border Protection sent this bulletin at 03/28/2025 08:00 AM EDT Cargo Systems Messaging Service CSMS # 64530388 - REMINDER: ACE Reports: No Data Updates from March 28 to April 2 Due to Software Upgrade The data available through ACE Reports will not be updated between the morning update on Friday, March 28 and the morning update on Wednesday, April 2. Users will still be able to run ACE Reports during that window, but the data will not be current. Trade processing will not be impacted. On the morning of Wednesday, April 2, ACE Reports will be refreshed with current data. During the upgrade window, please hold all data latency questions until CBP has communicated through CSMS that the system is once again available with the most up-to-date information. 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 64530388?

CSMS 64530388 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "REMINDER: ACE Reports: No Data Updates from March 28 to April 2 Due to Software Upgrade". 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 64530388 published?

CBP published CSMS 64530388 on March 25, 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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