It is the mistake of the seller to execute the sale deed and register it without receiving the full sale consideration amount, hence if at all it is to be cancelled only he has to look for legal sources to cancel it or file a suit for recovery of the balance of sale consideratio amount.
As a buyer you have no options.
you cannot cancel the registereed sale deed.
Therefore please be infiormed that you cannot simply cancel a registered sale deed solely because you haven't paid the full sale amount. The sale deed is a legally binding document, and the appropriate remedy for the seller is to seek recovery of the outstanding balance through civil courts