Why 4-Way Match Doesn’t Catch Every Overpayment — And Where Leakage Actually Hides

Author: Angie Holsen, PRGX Regional Vice President of Client Services Last Updated: June 2026 Most large enterprises have invested significantly in automated invoice verification — and for good reason. Three-way and four-way matching processes, embedded in ERP systems, are designed to catch billing errors before payments go out. In theory, matching invoices against purchase orders, goods receipts, and contract […] The post Why 4-Way Match Doesn’t Catch Every Overpayment — And Where Leakage Actually Hides appeared first on PRGX .