CSMS 66359035·Operational·September 26, 2025·View on csms.cbp.gov ↗

Submitting HTS Codes when Filing an Air Import Manifest

Plain-English explanation

CSMS 66359035 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on September 26, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "Submitting HTS Codes when Filing an Air Import 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 # 66359035 - Submitting HTS Codes when Filing an Air Import Manifest U.S. Customs and Border Protection sent this bulletin at 09/26/2025 04:51 PM EDT Cargo Systems Messaging Service CSMS # 66359035 - Submitting HTS Codes when Filing an Air Import Manifest When Automated Commercial Environment (ACE) air manifest filers choose to include a Harmonized Tariff System (HTS) code, it should be reported in the free-text cargo description field. If air manifest filers submit the CBP Shipment Description (CSD) to opt to provide the applicable HTS code for a manifest filing, then ACE requires filers to provide the shipment “Declared Value” and “ISO Country Code” for all shipment types. In the future, U.S. Customs and Border Protection (CBP) plans to update ACE to only require the “Declared Value” and "ISO Currency Code" when the applicable HTS code is provided in the CSD record for express house air waybill record when the entry type is “11” or “92” only. Once the update is deployed, all other air manifest filers opting to submit HTS codes in lieu of a precise description will use the HTS code in the CSD record without any additional mandatory data fields. For more information, review the table on page 21 of CBP’s ACE Air Import Manifest Message Line Identifiers Implementation Guide . For technical questions, contact your assigned CBP Client Representative. For other questions, contact CBP’s Office of Field Operations Manifest Branch at OFO-MANIFESTBRANCH@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 66359035?

CSMS 66359035 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Submitting HTS Codes when Filing an Air Import 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 66359035 published?

CBP published CSMS 66359035 on September 26, 2025. 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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