CSMS 55326449·Operational·March 2, 2023·View on csms.cbp.gov ↗

REMINDER – Expansion of Section 321 Data Pilot

Plain-English explanation

CSMS 55326449 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on March 2, 2023. It carries the official CBP guidance brokers and importers must follow for the topic — "REMINDER – Expansion of Section 321 Data Pilot". 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 # 55326449 - REMINDER – Expansion of Section 321 Data Pilot U.S. Customs and Border Protection sent this bulletin at 03/02/2023 01:27 PM EST Cargo Systems Messaging Service CSMS # 55326449 - REMINDER – Expansion of Section 321 Data Pilot CBP is pleased to announce the expansion of the Section 321 Data Pilot and is now accepting new applicants to participate in the pilot. There is no limit to the number of volunteers CBP will accept for the expanded pilot, which will now end in August 2025 unless further extended. The Section 321 Data Pilot was implemented in August 2019 to test risk segmentation benefits of accepting advance data from e-commerce supply chain partners. The pilot has resulted in faster and more accurate risk assessment and adjudication for CBP and fewer CBP holds. By increasing pilot participation, the agency expects these benefits will increase as well. CBP is excited to expand the Section 321 Data Pilot and onboard new participants to: Provide additional companies the opportunity to develop processes for gathering the data from various sources in the supply chain to transmit a single and complete filing. Identify future trade facilitation benefits. Explore new technology that can be incorporated into future regulation. CBP encourages participation from stakeholders in the e-commerce environment, including carriers, brokers, freight forwarders, as well as online marketplaces. For details on participating in the Section 321 Data Pilot, please click the link below or email CBP at ecommerce@cbp.dhs.gov . See the Federal Register website below for additional details: https://www.federalregister.gov/documents/2023/02/16/2023-03279/section-321-data-pilot-modification-of-data-elements-expansion-of-pilot-to-include-additional-test Related message: CSMS#54387492 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 55326449?

CSMS 55326449 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "REMINDER – Expansion of Section 321 Data Pilot". 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 55326449 published?

CBP published CSMS 55326449 on March 2, 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.

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