A deed of agreement executed by a notary as an authentic deed possesses conclusive evidentiary strength and provides legal certainty for the parties involved. However, in practice, such deeds can be annulled by the court due to non-fulfillment of the legal requirements of an agreement or the presence of formal and material defects. The annulment of a deed of agreement raises legal issues regarding the legal and ethical liabilities of the notary, as well as the resulting legal consequences. This study aims to analyze the legal and ethical liabilities of notaries toward deeds of agreement annulled by the court and to examine the legal consequences of such annulments by the District Court. The research method employed is normative legal research using statutory, conceptual, and case-based approaches. The legal materials consist of primary, secondary, and tertiary legal sources. The results indicate that the legal and ethical liabilities of a notary for a deed annulled by the court depend on the presence or absence of errors or negligence by the notary in exercising their authority according to the Law on Notary Positions and the Notary Code of Ethics. The legal consequence of the annulment of a deed of agreement is the loss of its binding legal force and its evidentiary value as an authentic deed from the moment the court decision becomes legally binding (inkracht), thereby restoring the legal relationship of the parties to its original state (restitutio in integrum).