This research refers to provide a clear understanding of the accountability of the Land Deed Making Officer (PPAT) for the Sale and Purchase Deed made based on false information and to analyze the preventive measures that should be taken by the Land Deed Making Officer (PPAT) to avoid a conflict related to the Deed of Sale and Purchase made based on false information. This research uses in this study, this research uses a type of doctrinal legal research or also known as normative legal research. This research uses a Case Approach. The Case Approach is carried out by conducting an analysis of cases related to the issues at hand that have become court decisions and have permanent legal force. In this legal research as a case approach carried out, namely examining civil cases in the case of Notaries/PPAT who commit unlawful acts, namely making Deed of Sale and Purchase based on false information, so that it is one of the reasons why Notary/PPAT also becomes the Defendant, which is the main study in this case approach is the Supreme Court Decision Number 1146 K/PDT/2020 which has permanent legal force.