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ACE Certification Maintenance Window Set for September 30

29 September 2026

In plain English

CBP will perform an extended maintenance window on the ACE Certification environment on September 30, 2026, from 5:00 p.m. to 9:00 p.m. ET.

Read the official notice
Topic
Customs operations
Regulator
CBP
Published
29 September 2026
For
Imports and Exports
Where it applies
United States
Source
CBP CSMS

From the notice

U.S. Customs and Border Protection (CBP) will carry out an extended invasive maintenance window for the Automated Commercial Environment (ACE) Certification environment on September 30, 2026, from 5:00 p.m. to 9:00 p.m. ET.

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