Hello candidate,

Hope you are doing well.

The documents required the time of application form fill up for NDA are

1. 12th mark sheet and certificate from a recognized board
2. 10th mark sheet and certificate from a recognized board
3. DOB certificate
4. Passport size photo
5. Photo identity proof like aadhar, pan etc
6. ST/SC certificate ( if any )
7. Residential certificate
8. Signature

You can refer to the link below for more details

https://competition.careers360.com/articles/nda

Hope it helps.

Thank you!!