CSMS # 55978484 - Resolved - ACE Processing Delays U.S. Customs and Border Protection sent this bulletin at 04/20/2023 06:04 PM EDT Cargo Systems Messaging Service CSMS # 55978484 - Resolved - ACE Processing Delays The below issue is now resolved. CBP is aware of ACE processing delays, technicians are looking into this, another CSMS will be issued when resolved.