Question 380
During a post-incident audit at a retail marketplace, the IS auditor learns that an invoice system records approvals without binding them to a specific transaction state. The affected operation supports customer checkout and order fulfillment. Customer transactions and market trust depend on effective control. What test BEST distinguishes effective control operation from an unsupported assertion?
Explanation
Correct Answer
Correct. Review the design control matrix and challenge representative high-risk workflows with negative and boundary test cases. The procedure directly tests the reported condition that an invoice system records approvals without binding them to a specific transaction state. A defensible IS audit conclusion requires relevant and reliable evidence from the actual control population and period.
Incorrect Answers
Not the most direct fieldwork procedure for these facts. The evidence appropriate to the audit conclusion prerequisite remains unaddressed.
Not the most direct fieldwork procedure for these facts. It changes a different feature than evidence appropriate to the audit conclusion.
Not the most direct fieldwork procedure for these facts. That change would not implement evidence appropriate to the audit conclusion.