you 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.

2) . 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.

3) There is no specific period of limitation fixed for filing the suit for rectification. Thus the residuary Article- 113 is applicable.you ought to file suit within three years from the date of the sale deed. From the date of the sale deed itself, the time starts to run for filing the suit

The owner has to be traced. Otherwise consent of the other property owners adjacent to your land have to be taken and an application has to be given to the municipal corporation that this has happened.

As you have already executed a gift deed, you may very well execute and register the rectification deed now, attaching all the relevant documents to support the need for rectification. You may also narrate the relevant facts in the rectification deed: what the original error was, how it came to light and why the original vendors could not rectify it earlier.

Yes you need to execute the rectification deed showing the said error

Dear Client,

A rectification deed signed by you shall be the right option to set right the errors.

Thankyou

You cannot unilaterally execute a registered rectification deed to rectify the error.

The error is a vital one because the property would be identified only by such details.

If your vendor is not traceable, then you may first issue a legal notice to the vendor to his last known address by registered post and get it returned undelivered if he is not available in the said address.

Subsequently you may submit a rectification deed to the concerned registrar's office, who may not entertain the papers for registration,

After that you can file a suit for direction to sub registrar concerned to register the rectification deed to rectify the error in the schedule of property based on the documentary evidences in you possession and the reasons you rely upon.

Once the rectification deed is permitted to be registered then yo can as a donor execute a registered rectification deed to rectify the error in the registered gift deed executed in favor of your wife.