Hello,

The documents required during TS ICET counselling are

• TSICET-2020 Rank Card.
• TSICET-2020 Hall Ticket.
• Aadhar Card.
• S.S.C or its equivalent Marks memo.
• Intermediate or its equivalent Memo-Cum-Pass Certificate
• Degree Memorandum of marks.
• Degree Provisional Pass Certificate.
• Study or Bonafide Certificate from IX class to Degree.
• Transfer Certificate (T.C).
• Income Certificate issued on or after 01-01-2020 by competent authority, if applicable.
• Caste Certificate issued by competent authority, if applicable.
• Residence Certificate of candidate for a period of 7 years preceding to qualifying examination in case where the candidate has no institutionalized education.

So you don't need GAP certificate.