What is ayan patta?

We have purchased an agricultural land and obtained patta also for the same. period fixed by this Court, which is relating to grant of patta in the Petitioner's name as an Akthar for the property in Ayan Nanja lands in Survey No. authority to resume the lands when the DC condition patta was changed into ayan patta. have to be determined in accordance with the conditions in patta itself and where.