1. 3 passport size photoghraphs

2.provisional josaa seat allotement letter

3. adhar card

4. jee main admit card

5. jee main  score card

6. date of birth proof

7. class 12 marks sheet

8. category certificate(if any)

for the details of the counselling method and the process read this link

https://engineering.careers360.com/articles/jee-main-counselling-seat-allotment

The jee mains counselling is the same done by joint seat allocation authority(JOSAA), .during this counselling, one can fill the colleges and the desired courses according to (in the list) preferences. The josaa counselling is the same platform on which counselling takes place for admission into iits, nits ,iiits and other private institutions which acknowledge jee mains and jee advanced as their modes of admission. So the counselling will start altogether online once the jee advanced scores are declared .

All documents required for the counselling are as follows:

• Provisional JoSAA Seat Allotment Letter 2019
• Two Passport size photographs
• Candidate Undertaking
• Photo Identity Card (valid)
• Original JEE Advanced Admit Card 2019
• Proof of Seat Acceptance fee payment by e-challan or SBI Net banking
• Date of Birth Proof (10th Standard Mark Sheet)
• Class 12th (or equivalent) Mark Sheet and Pass Certificate
• Medical Certificate
• Category Certificate (if applicable)
• Certificate for PwD (if applicable)
• Passport (for foreign nationals) or OCI Certificate or PIO Card (if applicable)
• DS Certificate (if applicable)

• Registration cum Locked Choices for Seat Allotment

For further detais regarding counselling , visit the site https://josaa.nic.in

hope this helps!!