All documents of property

You can ask your friend to approach the local land revenue department with an application to survey and fix the boundary stones in the property under the survey number by producing the copy of the document 

The survey department will locate the property and will do the needful. 

To find the exact location of agricultural land by its owner, you can try the following steps: 1. *Check land records*: Obtain a copy of the land record or the 7/12 extract from the local revenue department or talati office. This document will show the owner's name, land survey number, and location. 2. *Use online portals*: Utilize online portals like Bhulekh, Land Record, or e-Dhara (in Gujarat) to search for land records by owner name, survey number, or village name. 3. *Consult local authorities*: Reach out to the local tehsildar, talati, or gram panchayat office for assistance in locating the land. 4. *Use GPS mapping tools*: Employ GPS mapping tools like Google Maps or GPS Survey to identify the land location using the survey number or owner's name. 5. *Physically verify*: Visit the village or area and ask locals for directions to the land. 6. *Seek professional help*: If needed, consult a lawyer or a land surveyor to assist in locating the land. Remember to ensure the accuracy of the information and follow local procedures for verifying land ownership and locations.

He should contact/ apply to area Tehsildar for survey and demarcate through local patwari, girdawar, kanonungo etc (revenue department).