Ramachandran,
Mr. Karthikeyan has given some useful tips, as per the link, the important aspects are " In case the original deed is registered, one should get the rectification deed also registered. And pay the requisite stamp duty and registration charges as per the laws in force in the State. For general mistakes like spelling mistakes, the stamp duty and registration charges are Rs 100 each. In case the rectification deed relates to the area, the names of the parties or the extent of the property, the stamp duty and registration charges as applicable to the conveyance deed are payable.
In case some of the parties to the agreement do not agree to such an amendment or rectification of the executed documents, the other party may file a suit before a court under Section 26 of Specific Relief Act 1963. The law provides for relief to parties in case the real intention of the party is not properly reflected in the documents executed because of a bona fide mistake of fact.
The aggrieved party may institute a suit to have the deed rectified. The court can direct the rectification of an instrument, if it is satisfied that the deed does not express the real intention of the parties. This relief is entirely discretionary. The relief won't prejudice the rights acquired by a third party in good faith for value.
It is to be noted that the mistake should pertain to facts only and should not be a mistake of law. Mistakes of law cannot be rectified through a rectification deed and a separate procedure needs to be followed."
Hope you understand from the above contents the under lying consequences, so consult a local lawyer with your papers and proceed further.