Hi Sriman,

The documents required for JoSAA Counselling are:-

• Provisional seat allotment letter.
• 3 passport size photographs.
• Proof of payment of seat acceptance
• JEE MAIN 2018 admit card
• JEE MAIN 2018 scorecard
• Photo identity/AADHAR card
• CLass 12th and 10th mark sheet

I am attaching a link below for more details about JoSAA counselling:-

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

All the best!!