Hello Guru

There is no chance that your seat will be cancelled during reporting till you produce proper documents in JOSAA counselling and if you are joining NIT or IIT then your Xll percentage is more than 75%. 

Following documents are to be carried:

• Three passport size photograph and the photos should be same as in admit card.
• Provisional allotment letter. 
• Photo identity card and a xerox of that like aadhar card. 
• Proof of seat acceptance fee payment. 
• Jee main admit card for nit, iit or government college counselling. Jee advanced marksheet for iits. 
• Birth certificate
• Jee main score card. 
• X and XII marksheet. 
• Category cerificate if applicable. 
• pwd cerificate if applicable

If you are a pwd candidate then your pwd cerificate verification will be done by a panel of doctors. If only they pass you as a pwd candidate then only you can get admission.