ACE Certification Environment Maintenance Window Set for September 20, from 5:00 p.m. to 9:00 p.m. ET

CSMS # 57751478 - ACE Certification Environment Maintenance Window Set for September 20, from 5:00 p.m. to 9:00 p.m. ET U.S. Customs and Border Protection sent this bulletin at 09/19/2023 10:05 AM EDT CSMS # 57751478 - ACE Certification Environment Maintenance Window Set for September 20, from 5:00 p.m. to 9:00 p.m. ET U.S. Customs and Border Protection (CBP) will support an ACE Certification environment extended invasive maintenance window on September 20, 2023, from 5:00 p.m. to 9:00 p.m. ET.