On June 20, 2018, U.S. Customs and Border Protection (CBP) announced, in Cargo Systems Messaging Service (CSMS) 18-000395, the Office of Trade will deactivate the Automated Commercial Environment (ACE) Drawback Certification mailbox on July 9, 2018.
After the Office of Trade deactivates the mailbox, CBP says, “…filers should contact their assigned ABI Client Representatives for assistance with ACE ABI drawback questions…”
The CSMS may be found here: