Hello, You  need to produce the non local certificate along with the following documents for the admission process

• TS ICET rank card 2020

• Hall ticket of TS ICET

• Aadhaar card

• Passing/ degree certificate

• SSC marksheet/ passing certificate

• Intermediate or equivalent marksheet/ passing certificate

• Degree provisional pass certificate

• Degree memorandum of marks

• Study or Bonafide Certificate from IX class to Degree

• Transfer certificate (TC)

• Income Certificate issued on or after 01-01-2020

You can get the non resident official certificate form this link https://dtets.cgg.gov.in/Documents/Related%20Links/Definition%20of%20Local%20&%20Non%20local%20status%20(Annexure-II).pdf

For details regarding the admission process kindly check this link

https://bschool.careers360.com/articles/ts-icet-counselling

Best wishes.