CSMS # 67423068 - Duty Calculation Validation Enhancement Deployed to ACE Certification (CERT); ACE Production (PROD) Deployment Scheduled for Feb 17

U.S. Customs and Border Protection sent this bulletin at 01/16/2026 01:44 PM EST

Cargo Systems Messaging Service

CSMS # 67423068 - Duty Calculation Validation Enhancement Deployed to ACE Certification (CERT); ACE Production (PROD) Deployment Scheduled for Feb 17

U.S. Customs and Border Protection has updated the Automated Commercial Environment (ACE) certification environment (CERT) to enhance duty calculation validation in response to trade requests. When testing in CERT, software vendors will see the following condition codes when an incorrect duty value is provided on entry summary lines that have up to 32 Harmonized Tariff Schedule (HTS) codes:

624 – EST DUTY/CALC’D DUTY MISMATCH - LINE
627 – Est Duty/Calc’d Duty Mismatch - Total

This enhancement is expected to be deployed to the ACE Production (PROD) environment on February 17, 2026.

For any technical questions regarding this update, please contact your assigned Client Representative.

Other questions regarding this change should be directed to ESAR@cbp.dhs.gov.

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