This article proposes a model of justified judicial decision-making for the Chilean criminal process, based on the notion of error as a defect in justification. Different types of defective judicial decisions are distinguished, such as those with defects in justification, that violate procedural rules, that violate fundamental rights, or that commit offenses or criminal conduct. However, it is concluded that this model cannot prevent the conviction of innocent individuals. The text addresses the configuration of the judicial process and the elements that influence its development, such as the activity of the parties, the judge, and the state, as well as evidence and the tension between the closure of the process and the correct decision. Additionally, the importance of rules that resolve the tension between the correct decision and the final decision is highlighted, and the minimum requirements for a judicial sentence to be recognized as such are mentioned. The text discusses the classical and discretionary paradigm in judicial decision-making. The most commonly used categories of error in procedural doctrine are also mentioned. The text addresses the issue of error in the judicial sphere and proposes a classification of different types of errors. The author suggests that these categories are not sufficient to identify all possible cases of error and proposes the notion of "error as a defect in justification." The text presents an analysis of the justification of judicial decisions in the Chilean criminal process. A distinction is made between internal and external justification, and three operations performed by the judge when applying the law are identified: the justification of interpretive decisions, the evaluation of evidence, and the derivation of an individual norm. Additionally, a model of justified judicial decision-making is proposed, and cases of errors or defects in justification in the final sentence are presented. The text analyzes different types of judicial errors in the Chilean criminal process. These errors include falsehood of facts, problems in the construction of the factual premise, lack of clarity in the exposition of proven facts, errors in the evaluation of evidence, contradictions in evaluation, errors in the application of the standard of proof, mistaken legal classification, ignorance of the law, problems in the identification of legal provisions, defects in interpretation and argumentation, omission or insufficiency of legal reasons, and error in the determination of legal consequences. These errors can be evaluated through epistemic, axiological, logical, and methodological standards. The text discusses the possibility of challenging a criminal sentence for the violation of procedural rules. It is mentioned that some grounds for challenge focus on the violation of procedural rules considered particularly serious for the validity of the process and the decision. Additionally, a generic ground is mentioned that allows for the request for nullity of the oral trial and the sentence when rights or guarantees secured by the Constitution or current international treaties are violated. The article proposes a model of justified judicial decision-making for the Chilean criminal process. It focuses on the protection of constitutional rights and guarantees during the process, such as the right to equality before the law, due process, the presumption of innocence, among others. The mechanisms for challenging serious abuses, acts of prevarication, and bribery are also mentioned. Different types of defects in judicial decisions are distinguished, including errors in justification, violation of procedural rules, violation of fundamental rights and guarantees, and offenses, abuses, or criminal conduct committed in the issuance of the sentence. Additionally, the possibility of material errors in judicial decisions, which can lead to the conviction of an innocent person or the acquittal of a guilty person, is mentioned. The article deals with epistemic rationality and procedural rules applicable in the criminal process. Cases of wrongful convictions are mentioned, and the possibility of a [Extracted from the article]