Caste mis-match in school leaving certificate

Hello! I am Nitin from Belgaum city,Karnataka. My father was in in police department for 30 years and he expired on duty. So i am trying father job to my younger brother on compensation ground. but in my father service book caste written as Hindu Pattar where as in my brother and i Hindu Daivadnya Brahmin. Now they are saying there is mis-match of caste.need to clarification. it is going from loast 3 years even i have contacted many persons no output. Pls can one help me...