Safeguards and procedure of mutation of property.

legal question My grandfather expired in 1998. While getting an updated Mutation copy of our land today, I found that only my uncle's name is there in place my grand father. My questions are: 1. Is it legal for him (uncle) to insert only his name (ignoring my father's name) in mutation copy? 2. Can I apply and insert my father's name in the mutation copy now? 3. Most probably he (uncle) suppressed information and shown only him to be legal heir of my grandfather to get his name mutated. If so, can I file a case against him for cheating/420? thanks for your valuable answer.