Hello Bhawana,

During JOSSA counselling for For NITs, GFTIs and IIITs as a document you need to carry your 10th Standard Mark Sheet or Date of Birth Proof, The other documents you need to carry-

Three Passport Size Photographs identical to the one Uploaded in JEE Main 2019 Registration

Provisional Seat Allotment Letter

Candidate Undertaking

Proof of Fee Payment by e-challan or Internet Banking of SBI for Seat Acceptance (Rs. 15, 000 for SC/ST/PwD candidates and Rs. 35,000 for others)

JEE Main 2019 Score Card

JEE Main 2019 Admit Card

12th Standard (or equivalent) Mark Sheet and Pass Certificate

Photo Identity Card

Medical Certificate

Category Certificate (if applicable)

PwD Certificate (if applicable)

OCI Certificate or PIO Card (if applicable)

Print out of Filled Choices for Seat Allotment

You can check the other information with the given below link.

https://engineering.careers360.com/articles/josaa-counselling

Good Luck!