CSMS # 65903569 - ACE Certification Environment - Extended Invasive Maintenance Window August 13, 2025 U.S. Customs and Border Protection sent this bulletin at 08/12/2025 04:54 PM EDT Cargo Systems Messaging Service CSMS # 65903569 - ACE Certification Environment - Extended Invasive Maintenance Window August 13, 2025 The Automated Commercial Environment, or ACE, Certification Environment (CERT) will have an extended invasive maintenance window on Wednesday, August 13, 2025, from 5:00 p.m. to 10:00 p.m. ET.