Can any uttar pradesh lawyer tell what is paka 11 ?

Dear Sir,

I have an agricultural land in the name of my father and two uncle.

Now my father and uncle are no more so i want to sell the land with the permission of my brother and cousins.

So kindly tell me what is paka 11 ? Can we transfer name online using uttar pradesh paka 11 website ?

Please reply..

Thank You..