CSMS # 58910835 - There will be an ACE Certification Standard Invasive Maintenance Window on January 3, 2024, from 5:00 p.m. to 8:00 p.m. ET. U.S. Customs and Border Protection sent this bulletin at 01/03/2024 09:27 AM EST Cargo Systems Messaging Service CSMS # 58910835 - There will be an ACE Certification Standard Invasive Maintenance Window on January 3, 2024, from 5:00 p.m. to 8:00 p.m. ET. There will be an ACE Certification Standard Invasive Maintenance Window on January 3, 2024, from 5:00 p.m. to 8:00 p.m. ET.