According to the latest updates of the International Standards on Auditing, the audit documentation represents the record of applied audit procedures, of the sufficient and appropriate obtained audit evidence and of the conclusions reached by the auditor. There is currently an increased interest in studying the documentation approach of the entire audit universe. In this context, the importance of the given paper lies in the need for continuous examination of the documentation related to the audit process as a whole. The research is based on the qualitative research method, which allowed the review of a series of important research on audit documentation and the study of related national and international regulations. The study reveals some of the determining factors of the quality of financial audit missions, which reside in the deep knowledge and correct operation of the regulations applicable to the audit documentation, including all the amendments made and the correctness of its preparation. Also, when preparing the audit documentation, the particularities of the performed audit stage, the specifics of the audited client, the nature and context of the applied procedures must be taken into account.