The auditor needs to determine that effective procedures exist in the personnel department to identify current employees, communicate their status completely and correctly to the payroll function, and monitor adherence to employee authorization procedures. Using either the test data or integrated test facility (ITF) approaches, the auditor can assess the correctness of programmed procedures that validate employee authenticity. This testing involves creating a dummy authorized employee file and a corresponding attendance file containing both records that match and some that do not. The auditor can analyze the processing results to determine if the payroll application correctly identified and rejected the invalid transactions.