The case of the petitioners is that their father late E. Gandaiah along with two others purchased an extent of Ac.4-34 guntas of land in Survey Nos.40, 41, 44 and 46 of Raidurga Village, Serilingampally Mandal, Ranga Reddy District, through an agreement of sale, dated 20.02.1971, from the original pattadars. Their father was half-share holder of the said property. The sale was validated by the competent authority i.e., Mandal Revenue Officer, under Section 5-A of A.P. Rights in Land and Pattadar Pass Books Act and the Mandal Revenue Officer issued 13-B Certificate under proceedings No.B/1319/90, dated 06.04.1993, following due procedure contemplated under the said Act. Their father was issued pattadar pass book and title deed to the extent of his share. When there was a boundary dispute in the year 1993, their father applied for demarcation and demarcation was done by conducting panchanama. After the death of their father, petitioners succeeded the property of their father. As the respondents are trying to dispossess the petitioners