Hello Megha,

Details of documents required at the time of reporting to college  has been listed on the basis of previous year data.

• AIIMS MBBS Admit Card 2018
• Call letter issued by AIIMS, New Delhi
• Date of Birth Proof
• Class XII Mark sheet
• Migration Certificate
• Category certificate from the prescribed authority (For SC/ST/OBC category candidates)
• Six passport size photographs
• One set of self-attested copies of all certificates 

For more information you can refer to this website - https://googleweblight.com/i?u=https://medicine.careers360.com/articles/aiims-mbbs-counselling&hl=en-IN