CSMS 67735996·System update·February 12, 2026·View on csms.cbp.gov ↗

ACE Import Manifest Update: New Carnet Error Codes Available in CERT

Plain-English explanation

CSMS 67735996 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on February 12, 2026. It carries the official CBP guidance brokers and importers must follow for the topic — "ACE Import Manifest Update: New Carnet Error Codes Available in CERT". 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

Cargo Systems Messaging Service CSMS # 67735996 - ACE Import Manifest Update: New Carnet Error Codes Available in CERT U.S. Customs and Border Protection (CBP) has enhanced the Automated Commercial Environment (ACE) certification environment (CERT) to enable filers to submit a Carnet number and expiration date via an ACE truck import manifest filing. Accordingly, CBP has updated following truck implementation guides: ANSI X12 Truck 309 Customs Manifest Added new Bill of Lading Type code for Carnet (40) Added new Reference Identification Qualifier for “Carnet Number” (CRN) and “Carnet Expiration” (CRE) EDIFACT Truck CUSCAR Import Manifest Added new Document Name code type for Carnet (40) Added new Document Name code for “Carnet Number” (960) and “Carnet Expiration” (961) EDIFACT Truck CUSRES Accept/Reject Manifest and ANSI X12 Truck 355 Accept/Reject Manifest Added new error codes 551 – INVALID OR MISSING CARNET NUMBER 552 – INVALID OR MISSING CARNET EXPIRATION DATE Software developers and trade filers who submit manifest transactions via Electronic Data Interchange (EDI) will need to make the appropriate updates to incorporate these changes. CBP plans to deploy these changes to the production environment (PROD) on March 24, 2026. For technical questions, contact your CBP Client Representative. For other questions, contact CREM@cbp.dhs.gov . Related Message Number(s): 67120036

Frequently asked questions

What is CSMS 67735996?

CSMS 67735996 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "ACE Import Manifest Update: New Carnet Error Codes Available in CERT". 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 67735996 published?

CBP published CSMS 67735996 on February 12, 2026. 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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