This discussion concerns amending a registered partition deed for an ancestral property. The original deed allocated the ground floor to one party and the first floor to another, with shared rights to vacant land and terrace. The second party wishes to build a room on the terrace for personal use, which requires mutual agreement as per the deed's clause for second-floor construction. Experts advise obtaining written consent from the other party for any modifications or new constructions, rather than formally rectifying the deed itself, and also confirm that letting out the first floor for personal use is permissible.