CSMS 56571242·Operational·June 9, 2023·View on csms.cbp.gov ↗

ACE Portal Modernization – Phase 4 Demo for Trade Users

Plain-English explanation

CSMS 56571242 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on June 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". 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 # 56571242 - ACE Portal Modernization – Phase 4 Demo for Trade Users U.S. Customs and Border Protection sent this bulletin at 06/09/2023 03:15 PM EDT Cargo Systems Messaging Service CSMS # 56571242 - ACE Portal Modernization – Phase 4 Demo for Trade Users On June 25, 2023, U.S. Customs and Border Protection (CBP) will deploy 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 Thursday, June 15, 2023: ACE Portal Modernization – Phase 4 Demonstration for Trade Users Thursday, June 15, 2023 3:00 p.m. ET Join via Microsoft Teams Desktop or Mobile App here: Teams Meeting Link 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 56571242?

CSMS 56571242 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "ACE Portal Modernization – Phase 4 Demo for Trade Users". 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 56571242 published?

CBP published CSMS 56571242 on June 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.

Learn more

Tandom guides relevant to CBP CSMS messages

Subscribe to and triage CBP CSMS messages

How to subscribe to CBP Cargo Systems Messaging Service and triage the messages that change broker filing behavior, without losing the ones that matter.

Open resource

Real-time alerts when a CSMS message changes a duty rate

Set up alerts when a CBP CSMS message changes a duty rate on an HTS code you depend on. Built for brokers, forwarders, and importer compliance teams.