GST Migration starts From 01 January 2017 for Telangana State, Once Dealer will log in on Telangana Commercial Tax Department Portal, open Telangana vat site i.e. https://www.tgct.gov.in/tgportal/
Enter user id and password of the client
It will show pop-up window which will show details of GSTN Provisional Id and Temporary password on screen to enroll on GSTN Portal