I don't know patta number,survey number, and missed documents that was urban area how can I view patta number or survey number and the land documents for my grand father so I don't know land related so .what can I do

Hey, 

To extract online details of patta chitta documents you must either have the patta number or survey number. Without these two vital information points I believe it will be difficult to extract the documents and land details. 

If the question now rests at how to find survey number or patta number? Then you can visit the land revenue department office of your district with all the information that you have. They will guide you through and help you know the land details. It is quite common to not have land details papers or to misplace them, the department will be able to help you once you explain your situation to them.