1. From the statement of facts furnished by you it is apparent that the accurate plot number has not been reflected in the sale deed, which resultantly means that the property is not capable of being identified. A property that is incapable of being identified will inevitably invite plenitude of problems at the time of its proposed sale or transfer in any other manner such as will. gift, etc due to the reason that the title of the owner is not clear. Furthermore, you can be evicted from this property at any time by the previous owner through a court order. He may also file a criminal case against you for illegally possessing his property, in which event it will be difficult for you to prove your ownership.
2. Contact Mr.Pardeep and request him to execute a deed of rectification of property. If he refuses to accede to your demand then immediately move to court and seek necessary orders to legally compel him to pass the title to you.