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

May 10, 2023

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. The original intent in the AES Broadcast on May 3, 2023 was to raise awareness to filers of USML Category XXI items of the Notice of Proposed Rulemaking (NPRM). 

For further information or questions, contact the U.S. Census Bureau’s Trade Data Collection Branch.

Telephone: (800) 549-0595, select option 1 for AES 
Email: askaes@census.gov
Online: www.census.gov/trade
Blog: blogs.census.gov/globalreach

About the Census Bureau

We serve as the nation’s leading provider of quality data about its people and economy. The Census Bureau is the federal government's largest statistical agency. As the world’s premier statistical agency, we are dedicated to making our nation a better place. Policy-makers, businesses, and the public use our data to make informed decisions.