Application controls are automated mechanisms embedded directly within software code to ensure that transaction data is processed accurately, completely, and validly. Unlike IT general controls, which apply broadly to the infrastructure layer, application controls operate at the individual transaction level.
Application Control Matrix = Input Format Validation + Range Consistency Check + Completeness Check
Technology auditors test application controls by running test data through the system to confirm that automated business rules function as designed:
- Input Validation Controls: Checking that entry fields enforce mandatory formats, such as blocking alpha characters in financial value fields or verifying routing codes against active banking directories.
- Range and Limit Checks: Confirming that the application automatically blocks or flags entries that exceed logical thresholds, such as an individual payroll entry exceeding 80 hours per week.
- Automated Processing Match Loops: Testing automated three-way matching systems within procurement software to ensure supplier invoices are blocked from payment unless they match their corresponding purchase order values and receiving reports.
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