Hello,

You will get your original documents back if you cancel the seat allotted before the last date. The last date to cancel the seat allotted in first round is November 5, 2021, the last date to cancel the seat allotted in second round is November 18, 2021 and the last date to cancel the seat allotted in special round is November 26, 2021. As you haven't cancelled your seat you will not get your certificates back. If you withdraw the seat now you need to pay the first year tuition fee of the institute to get your original certificates back and join in the NIT allotted. You can find the guidelines using the link below

https://tseamcetd.nic.in/auth/TSEAMCET21NOTIFICATIONFINALPHASE.pdf