Automated Customs Entry (ACE) is the U. S. electronic Single Window platform for all trade processing, including all manifest, cargo release, post-release, export and partner government agency (PGA) data and is maintained by the CBP. Trade users can access ACE via two channels: The ACE secure data portal (ACE Portal) and electronic data interchange (EDI). Deciding on an ACE access method depends on the specific trade activity. Review the information here to determine how to successfully connect with ACE.