Are you kidding me? You people still use paper forms? Well, Customs and Border Protection has almost completely transitioned FTZ reporting from paper forms to electronic filing through ABI/ACE. The 216 and 6043 forms are notable exceptions for FTZ Operators. Want to sound like a seasoned FTZ pro? Use the old form numbers when referring to a U.S. Customs filing even if the ‘forms’ may no longer be used by CBP.