Change Of DOB In 10 Certificate - Year 2008-09

Hello SIr, My name is Leelanand. My cousin need to change her DOB in her 10 Certificate from 1992 to 1993 (In State of Haryana). DOB in her birth certificate is 1993. Her passed out year is 2009. Now we resides in Hyderabad, Telangana. I need to know the procedure and required advise. And please tell me where i have to file the suit if required.