On December 12, 2016, U.S. Customs and Border Protection (CBP) published in the Federal Register a general notice announcing the revised effective date for the Automated Commercial Environment (ACE) becoming the sole electronic data interchange (EDI) system authorized by the Commissioner of CBP for processing electronic drawback and duty deferral entry and entry summary filings. On August 30, 2016, CBP published a notice in the Federal Register announcing plans to make ACE the sole authorized EDI system for processing electronic drawback and duty deferral entry and entry summary filings. The changes announced in that notice were to have been effective on October 1, 2016. However, on October 3, 2016, CBP published a notice in the Federal Register announcing that the effective date for the transition to ACE as the sole CBP-authorized EDI system for electronic drawback and duty deferral entry and entry summary filings would be delayed until further notice. This notice announces that the effective date for the transition will be January 14, 2017, and ACS will no longer be a CBP-authorized EDI system for purposes of processing these filings.