Relying on manually compiled user lists increases the likelihood of errors, omissions, and inconsistencies, which can undermine the effectiveness of the access review process. It may also lead to incomplete or inaccurate assessments of user access rights, potentially exposing the organization to security risks and compliance issues.
While the completeness of the user list (option D) is indeed a concern, the source of the user list reviewed is typically of greater importance. A system-generated user list is generally more reliable and comprehensive, providing a more accurate representation of user access rights within the application.