During audit engagement planning, an internal auditor is determining the best approach for leveraging computer-assisted audit techniques (CAATs). Which of the following approaches maximizes the use of CAATs and why?
A.
Tracing, because it would enable the auditor to verify quickly that the record counts were properly included in the compilation.
B.
Inspection, because it would enable the auditor to verify how management enters the data into the application for processing.
C.
Testing data, because it would enable the auditor to ensure that the application processes the transaction as described by management.
D.
Reperformance, because it enables the auditor to verify that the application performed the calculation correctly.
Reperformance is a CAATs approach that involves independently executing the same procedures as the original process to verify the accuracy of the application’s calculations. This approach maximizes the use of CAATs because it directly tests the functionality and reliability of the system by ensuring that the system processes transactions and calculations correctly, as intended by management.
IIA References:
IIA Standard 1220: Due Professional Care suggests that internal auditors should apply appropriate techniques, such as CAATs, to obtain sufficient evidence. Reperformance as a CAATs method is particularly effective in verifying the integrity of system calculations.
The Practice Guide on Using CAATs highlights that reperformance is one of the most powerful techniques for validating that a system operates as intended and that transactions are processed correctly.
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