*UPDATE* - DDTC AES Data Element Reverted and Response Message Disabled Until Further Notice

CSMS # 56217040 - *UPDATE* - DDTC AES Data Element Reverted and Response Message Disabled Until Further Notice U.S. Customs and Border Protection sent this bulletin at 05/10/2023 04:29 PM EDT CSMS # 56217040 - *UPDATE* - DDTC AES Data Element Reverted and Response Message Disabled Until Further Notice On May 9, 2023, the US Census Bureau, US Customs and Border Protection and the Directorate of Defense Trade Control reverted the Automated Export System (AES) requirement of the Category XXI Determination Number data element when the USML Category XXI is entered. Additionally, the related Response Message 5C2 in the AES has been disabled.