You can submit a petition with the family court in the county where the birth was registered to correct an error. If you are talking about your SSLC certificate then it is not possible to change your date of birth. Date of birth should be given right during the application form. To change that you have to move legally. Your motion should contain a summary of your evidence and reasons for requesting the change of date of birth.

But it is possible to change your details in aadhar card.UIDAI has opened its online portal, which helps individuals update their personal information mentioned on the Aadhaar card online. You can download the form to make the changes in your information and then submit it at your neared Aadhaar Seve Kendra.