At this point, the resulting file may be quite large. Scanning the file visually for price
differences can be time consuming and ineffective. Here again is an application for a
filter. Using ACL’s Expression Builder feature, the auditor can easily create a filter that will select only records where PO Amount and Amount are not equal. The resulting file will thus contain only records with price discrepancies. Using other ACL features, the auditor can calculate the total price variance and make a determination as to its materiality. If material, the matter should be pursued with management. Figure 10.12, presents ACL’s Expression Builder window.