correction of the land documents

 I have farm land which on ground 0.91 hectre but the land documents show 0.64 land area I have also my grandfather's documents which show 0.91 hectre area,i applied for correction this case is in "sdm" office now but my correction in document brings my neighbours land documents also corrected their land area decreases in this manner therefore they denied permission for correction of my land what should I do