CBP ACE Emergency Maintenance at 4:30pm ET 3/31/2021

CSMS #46836540 - CBP ACE Emergency Maintenance at 4:30pm ET 3/31/2021 U.S. Customs and Border Protection sent this bulletin at 03/31/2021 03:12 PM EDT CSMS #46836540 - CBP ACE Emergency Maintenance at 4:30pm ET 3/31/2021 CBP will perform an emergency maintenance at 4:30pm ET. This maintenance will affect all ACE processing including the ACE Portal. CBP expects this maintenance to last about 3 hours. Another CSMS will be issued when the maintenance has completed.