Officer designation conversion under AP GST Act aligns VAT-era tax officers to corresponding GST ranks, enabling administrative transition. Appointment under section 3 of the Andhra Pradesh Goods and Services Tax Act, 2017 converts officers functioning under the Andhra Pradesh Value Added Tax Act, 2005 into corresponding GST designations. A table prescribes mapped ranks-from Commissioner of Commercial Taxes to Chief Commissioner of State Tax down to Assistant Commercial Tax Officer to Goods and Service Tax Officer-and the notification is issued by the Special Chief Secretary to Government, effective as stated in the order.