Processes a variety of accounts payable documentation; receives, reviews and verifies invoices, purchase orders, requests for payment, refunds, sales taxes, travel reimbursements, and/or other items; reviews vendor invoices for accuracy, completeness and proper authorization; enters data into accounting system for payment; and administers purchasing card program and system permissions; prints, verifies, submits for signature and sends payments to vendors; and maintains related documentation. Provides information/assistance to vendors, customers, taxpayers, County departments/employees, and others regarding accounting issues, customer accounts, invoices, fee schedules, deadlines, documentation, policies/procedures, or other issues; researches status of customer accounts; assists in resolving billing/account discrepancies; responds to complex questions or complaints; and researches problems and initiates problem resolution.