Deed of absolute settlement by brother in favour of sister

Mother died in 2015. Father died in 2016 intestate, leaving behind son and daughter as his only legal heirs. All are self acquired property of father. Now my self (daughter) made settlement with my brother that he his giving his undivided half share of the property to me in consideration of love and affection. This deed is registered. Now I'm facing problem that, along with settlement deed, legal heir copy and death certificate of my father and mother has to registered. Otherwise the settlement deed will be void. Kindly someone help me onthis.