About fraud in land purchasing

I purchased 1000 ( 22.5* 44.5)sq ft land in Lucknow for the purpose of making home .it is an agricultural land .Its registree and DAKHIL KHARIZ and all is done and now my name is showing in internet that khasra number and so on is registered with my name With all dimensions. Now when I was about to start doing boundary I asked lekhpal to measure my land and in that he told me that 500 sq ft area from back is come under grazing land and it can't be yours. Although in my registration 22.5 * 44.5 is registered... Which was obviously transferred from last owner. .... What can I do in this ??