Flowcharts are particularly effective for visualizing linear processes, as they clearly depict the sequence of steps, decision points, and flow of information. However, while they provide a useful representation of the process, they may not capture all risks, particularly those that are non-linear or involve complex interactions that are not easily represented in a flowchart format.
IIA Reference:
IIA Standard 2320: Analysis and Evaluation requires internal auditors to evaluate the design and implementation of processes. Flowcharts can help auditors visualize and understand process flows but may need to be supplemented with other tools (e.g., risk and control matrices) to capture the full range of risks.
The Practice Guide on Process Mapping indicates that flowcharts are valuable for mapping linear processes but should be used in conjunction with other tools when evaluating complex or non-linear processes.