CSMS 49746025·Operational·October 12, 2021·View on csms.cbp.gov ↗

Reminder: Information on ACE Collections – Release 4 Support Calls

Plain-English explanation

CSMS 49746025 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on October 12, 2021. It carries the official CBP guidance brokers and importers must follow for the topic — "Reminder: Information on ACE Collections – Release 4 Support Calls". 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 #49746025 - Reminder: Information on ACE Collections – Release 4 Support Calls U.S. Customs and Border Protection sent this bulletin at 10/12/2021 09:39 AM EDT Cargo Systems Messaging Service CSMS #49746025 - Reminder: Information on ACE Collections – Release 4 Support Calls In preparation for the upcoming deployment of Collections – Release 4 to the Automated Commercial Environment (ACE), CBP will be hosting Support Calls for trade users. To join the Support Calls, please use the links below: ACE Collections – Release 4 Trade Pre-Deployment Support Call: Tuesday, October 12, 2021, at 1:00PM ET Join via Microsoft Teams Desktop or Mobile App here: Collections – Release 4 Pre-deployment Support Call For additional information related to Billing, please see CSMS #49388905 For any additional questions, please contact acecollections@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 49746025?

CSMS 49746025 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Reminder: Information on ACE Collections – Release 4 Support Calls". 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 49746025 published?

CBP published CSMS 49746025 on October 12, 2021. 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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