1. You have to sign an affidavit before a first-class magistrate in your city. The affidavit should be worded like this: "I, XYZ, S/o PQR, hereby solemnly declare that my father's name has been wrongly indicated as RQP in my High-school Certificate. My father's correct name is PQR".
2. Thereafter, you have to publish similarly-worded advertisement in two newspapers (one English, one Vernacular).
3. You have to preserve the original affidavit and the original advertisement permanently.
Beware! I question everything and everybody.