CSMS 46161908·Operational·February 9, 2021·View on csms.cbp.gov ↗

Two Main Reasons of ACE System Failure (ASF) That Can Be Avoided

Plain-English explanation

CSMS 46161908 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on February 9, 2021. It carries the official CBP guidance brokers and importers must follow for the topic — "Two Main Reasons of ACE System Failure (ASF) That Can Be Avoided". 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 #46161908 - Two Main Reasons of ACE System Failure (ASF) That Can Be Avoided U.S. Customs and Border Protection sent this bulletin at 02/09/2021 04:35 PM EST Cargo Systems Messaging Service CSMS #46161908 - Two Main Reasons of ACE System Failure (ASF) That Can Be Avoided Please be advised that there are two main reasons of ACE System Failure (ASF) that can be avoided by a filer: Do not file summary for the same entry number via AE transaction within a short period of time. Most AE are processed within a minute. For a large summary, please wait 3 minutes before resubmitting AE for the same entry number. Do not submit AE and SE for the same entry number within in short period of time. Please wait 3 minutes to allow the transaction to finish before resubmitting either an AE or SE for the same entry number. Questions or concerns should be directed to Entry Summary, Accounts & Revenue Division (ESAR) at esar@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 46161908?

CSMS 46161908 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Two Main Reasons of ACE System Failure (ASF) That Can Be Avoided". 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 46161908 published?

CBP published CSMS 46161908 on February 9, 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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