CSMS # 68345626 - ACE Certification Standard Invasive Maintenance Window on April 15, 2026 from 5:00 p.m. to 8:00 p.m. ET U.S. Customs and Border Protection sent this bulletin at 04/14/2026 09:12 AM EDT Cargo Systems Messaging Service CSMS # 68345626 - ACE Certification Standard Invasive Maintenance Window on April 15, 2026, from 5:00 p.m. to 8:00 p.m. ET There will be an ACE certification standard invasive maintenance window on April 15, 2026, from 5:00 p.m. to 8:00 p.m. ET.