Section 20(1) in Andhra Pradesh General Sales Tax Act, 1957
(1)The (Commissioner of Commercial Taxes) may suo motu call for and examine the record of any order passed or proceeding recorded by any authority, officer or person subordinate to it, under the provisions of this Act, including sub section (2) of this section and if such order or proceeding recorded is prejudicial to the interests of revenue, may make such enquiry, or cause such enquiry to be made and subject to the provisions of this Act, may initiate proceedings to revise, modify or set aside such order or proceeding and may pass such order in reference thereto as it thinks fit.