CSMS 49667856·Operational·October 4, 2021·View on csms.cbp.gov ↗

Reminder: Information on ACE Collections – Release 4 Support Calls

Plain-English explanation

CSMS 49667856 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on October 4, 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 #49667856 - Reminder: Information on ACE Collections – Release 4 Support Calls U.S. Customs and Border Protection sent this bulletin at 10/05/2021 09:00 AM EDT Cargo Systems Messaging Service CSMS #49667856 - 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 49667856?

CSMS 49667856 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 49667856 published?

CBP published CSMS 49667856 on October 4, 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.

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.