I have purchased a dda flat on power of attorney 17 years ago. I am the 6th hand. now while applying for regularising stamp duty it is seen that in the sale deeed of first to second person, the amount of sale has been left blank. same with receipt also. Now SDM is asking me to produce the transferee. This transfer took place in 1991. He is not returning the original papers also. what to do? I need advise.