CSMS 49456863·Trade policy·September 20, 2021·View on csms.cbp.gov ↗

Modification to Antidumping Duty and Countervailing Duty Regulations

Plain-English explanation

CSMS 49456863 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (trade policy), published on September 20, 2021. It carries the official CBP guidance brokers and importers must follow for the topic — "Modification to Antidumping Duty and Countervailing Duty Regulations". 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 #49456863 - Modification to Antidumping Duty and Countervailing Duty Regulations U.S. Customs and Border Protection sent this bulletin at 09/20/2021 12:43 PM EDT Cargo Systems Messaging Service CSMS #49456863 - Modification to Antidumping Duty and Countervailing Duty Regulations On September 20, 2021, the Department of Commerce (Commerce) published new regulations and modifications to existing regulations related to its administration and enforcement of the antidumping duty (AD) and countervailing duty (CVD) laws. These regulations apply to various aspects of AD/CVD proceedings, including the deadlines for industry support comments pertaining to AD/CVD petitions, new shipper reviews, scope inquiries and rulings, circumvention inquiries and determinations, covered merchandise referrals from U.S. Customs and Border Protection (CBP), certification requirements to establish whether merchandise is subject to an AD/CVD order, and importer reimbursement certifications filed with CBP. Commerce also modified its regulations regarding service lists, entries of appearance, and importer filing requirements for access to business proprietary information in AD/CVD proceedings. Certain parts of these regulations will be effective within 30 days (October 20, 2021), while other parts will be effective within 45 days (November 4, 2021). These regulations and their respective effective dates can be found in the Federal Register notice . More information can also be found here: https://www.trade.gov/2021-adcvd-regulations-update . For Further Information Contact: For further information, please contact the Office of Public Affairs at (202)-482-4883, AD/CVD Operations, Enforcement and Compliance, U.S. Department of Commerce, 1401 Constitution Avenue NW, Washington, DC 20230. 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 49456863?

CSMS 49456863 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Modification to Antidumping Duty and Countervailing Duty Regulations". 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 49456863 published?

CBP published CSMS 49456863 on September 20, 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.

Open resource

Find the right manufacturer or exporter rate in an AD/CVD order

Cash deposit cascade, separate rates, all-others, and PRC-wide rates. Worked example on case A-570-910 (galvanized welded steel pipe from China) with three exporter-specific rates.

Open resource

Determine if a product is in scope of an AD/CVD order

Scope text is authoritative; the HTS list is illustrative. Read scope, find past rulings, and file a 19 CFR 351.225 inquiry. Worked example on case A-570-106 (wooden cabinets from China).

Open resource

Bulk-classify SKU descriptions with the Tandom HTS Classifier API

Run thousands of product descriptions through HTS classification, score the confidence, and triage borderline rows. Public search endpoint plus the closed-beta three-layer Classifier.

Open resource

Check AD/CVD exposure by HTS code

A practical workflow for checking antidumping and countervailing duty exposure on a US entry. For brokers and ops teams who need the answer before filing.

Open resource

CSMS 49456863·Trade policy·September 20, 2021·View on csms.cbp.gov ↗

Modification to Antidumping Duty and Countervailing Duty Regulations

Plain-English explanation

Message body

Full text as published by U.S. Customs and Border Protection

Frequently asked questions

What is CSMS 49456863?

When was CSMS 49456863 published?

CBP published CSMS 49456863 on September 20, 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?

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.

Open resource

Find the right manufacturer or exporter rate in an AD/CVD order

Cash deposit cascade, separate rates, all-others, and PRC-wide rates. Worked example on case A-570-910 (galvanized welded steel pipe from China) with three exporter-specific rates.

Open resource

Determine if a product is in scope of an AD/CVD order

Scope text is authoritative; the HTS list is illustrative. Read scope, find past rulings, and file a 19 CFR 351.225 inquiry. Worked example on case A-570-106 (wooden cabinets from China).

Open resource

Bulk-classify SKU descriptions with the Tandom HTS Classifier API

Run thousands of product descriptions through HTS classification, score the confidence, and triage borderline rows. Public search endpoint plus the closed-beta three-layer Classifier.

Open resource

Check AD/CVD exposure by HTS code

A practical workflow for checking antidumping and countervailing duty exposure on a US entry. For brokers and ops teams who need the answer before filing.

Open resource