Purchasing @dvantage PC is designed for suppliers who accept purchasing cards and authorize transactions through their PCs. It enables suppliers to provide line item detail (level III) - such as purchase order numbers, part numbers, item descriptions, unit prices, item quantities, or American Express ® charge descriptions - to their corporate customers. The line- item detail is sent through the MasterCard ® and Visa ® issuing banks and then on to the corporate customers. Charge descriptors are entered as order comments and sent to American Express during the settlement process. The supplier is reimbursed in a timely manner (usually two-three days), qualifies for lowest possible interchange rates, and provides value-added information to customers.