CSMS 46431404·Operational·March 1, 2021·View on csms.cbp.gov ↗

Status Notification Delays in ACE Air Manifest

Plain-English explanation

CSMS 46431404 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on March 1, 2021. It carries the official CBP guidance brokers and importers must follow for the topic — "Status Notification Delays in ACE Air Manifest". 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 #46431404 -Status Notification Delays in ACE Air Manifest U.S. Customs and Border Protection sent this bulletin at 03/01/2021 03:08 PM EST Cargo Systems Messaging Service CSMS #46431404 -Status Notification Delays in ACE Air Manifest There is currently a delay in CBP sending out Status notification messages to the Trade for ACE Import Air Manifests. Another CSMS message will be issued when the message backlog is cleared. 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 46431404?

CSMS 46431404 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Status Notification Delays in ACE Air Manifest". 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 46431404 published?

CBP published CSMS 46431404 on March 1, 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.