CSMS # 62059714 - ACE Certification Standard Invasive Maintenance Window: September 4, 2024 U.S. Customs and Border Protection sent this bulletin at 09/04/2024 09:15 AM EDT Cargo Systems Messaging Service CSMS # 62059714 - ACE Certification Standard Invasive Maintenance Window: September 4, 2024 There will be an ACE Certification Standard Invasive Maintenance Window on Wednesday, September 4, 2024, from 5:00 p.m. to 8:00 p.m. ET.