A professional who compiles data from vendor invoices and supporting documents to verify accuracy of billing data and to ensure receipt of items ordered, using calculator and computer. Responsibilities include:

• Compares invoices against purchase orders and shipping and receiving documents to verify receipt of items ordered.
• Reads computer files or computes figures to determine prices and discounts, following invoices and credit memorandums, and using calculator.
• Records data in control records.
• Contacts vendors or buyers regarding errors in partial or duplicate shipments, prices, and substitutions.
• Maintains file of returnable items received from or returned to vendors.
• Writes check or prepares voucher authorizing payment to vendors.