In a Cargo Systems Messaging Service (CSMS) bulletin published on April 11, 2025, U.S. Customs and Border Protection (CBP) reminded the trade that modernized Automated Commercial Environment (ACE) training guides are available.
CBP completed the migration from the legacy portal to the modernized ACE portal on February 22, 2025. These updated training guides are designed to help users navigate the new ACE portal platform.
CSMS # 64721388 can be found here:
https://content.govdelivery.com/bulletins/gd/USDHSCBP-3db91ec?wgt_ref=USDHSCBP_WIDGET_2
The ACE training guides can be found here:
https://www.cbp.gov/trade/ace/training-and-reference-guides