Error?prone tax/VAT codes to ERP–eProc + AvaTax/Vertex at req/PO/invoice, fewer AP returns
Tax and Value Added Tax (VAT) errors mounted as requesters guessed codes and cross?border rules drifted, causing mismatched invoices. We integrated a central tax engine validating at requisition, purchase order, and invoice, routing edge cases to tax. Orders were clean and Accounts Payable (AP) handled fewer returns.

