Yes,during the filling of AIIMS entrance exam form,your Aadhaar card credentials and your high school marksheet credentials must be same.Same thing happened to me last year there was mistake in date of birth in my Aadhaar card so I had to update my Aadhaar card before filling of AIIMS exam form.It takes 2u20133 days for updation of Aadhaar card so you shouldn't take any risk.And this is for NEET -Edit- Candidate should fill particulars by selecting the following in the online application Form:Name as per Aadhaar cardDate of Birth as per Aadhaar cardGender as per Aadhaar cardMotheru201fs Name as given in High School CertificateFatheru201fs name as given in High School CertificateMeans aadhaar card is must with correct details.