CSMS 57273505·Operational·August 9, 2023·View on csms.cbp.gov ↗

ACE Portal Modernization – Phase 4 Demo for Trade Users Today

Plain-English explanation

CSMS 57273505 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on August 9, 2023. It carries the official CBP guidance brokers and importers must follow for the topic — "ACE Portal Modernization – Phase 4 Demo for Trade Users Today". 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 # 57273505 - ACE Portal Modernization – Phase 4 Demo for Trade Users Today U.S. Customs and Border Protection sent this bulletin at 08/21/2023 08:00 AM EDT Cargo Systems Messaging Service CCSMS # 57273505 - ACE Portal Modernization – Phase 4 Demo for Trade Users Today On August 25, 2023, U.S. Customs and Border Protection (CBP) will deploy additional functionality for ACE Portal Modernization – Phase 4. Prior to deployment, the Trade Transformation Office (TTO) will host a demonstration via Microsoft Teams for Trade users on the following date: ACE Portal Modernization – Phase 4 Demonstration for Trade Users Monday, August 21, 2023 2:00 p.m. ET Join via Microsoft Teams Desktop or Mobile App here: Teams Meeting Link For additional information on the modernized ACE Portal, please visit the ACE Portal Modernization Webpage on CBP.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 57273505?

CSMS 57273505 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "ACE Portal Modernization – Phase 4 Demo for Trade Users Today". 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 57273505 published?

CBP published CSMS 57273505 on August 9, 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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