Doubts regarding cast valid certificate (urgent)

Help u/Temporary-Page-7426 because of lack of karma he could not make a post,on behalf of him I am quoting his exact query here ""See guys I'm from Maharashtra but my family is from MP but my birth is from MH only I want to make cste validity for NEET but many agents are claiming that **I NEED TO HAVE 50 YEARS HISTORY RECORD OF MY FAMILY** but my family is from MP AND in MP cste validity do not exist..no need there of that...that's the problem so idk what's the issue here but agents are saying it's not possible to make validity ! So if anyone of you have knowledge regarding this or do belong to MP or MH so please do help me I just want to know is it really not possible to make the validity when the family have migrated from one state to another and the record of 50 years of the family is from another state where validity is not any particular document which is being used presently It would be a great help as I really need to know this because of NEET registration AND THE COUNSELLING PROCESS otherwise I have to enroll myself from general category Btw I belong to OBC NCL non creamy layer - nagpur maharastra""