Stop the Importation and Trafficking of Synthetic Analogues Act of 2017 or the SITSA Act . 9002. Establishment of schedule A Section 202 of the Controlled Substances Act ( 21 U.S.C. 812 ) is amended— (1) in subsection (a), by striking five schedules of controlled substances, to be known as schedules I, II, III, IV, and V and inserting six schedules of controlled substances, to be known as schedules I, II, III, IV, V, and A