The Refund Claimant Return and a template of the Refund Request Spreadsheet are available on our website, tax.virginia.gov. Vendor Certification Form.We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error. This form is only accessible to RealSource Shoppers and Requesters (not Approvers). The form is located in the Accounts Payable Showcase. Please download the form, complete each field and print. Include the form with your refund so we can properly apply the refund and record the receipt. Many times when a third-party payer mistakenly pays a dental provider, the payer will request a refund of the overpaid amount. Fill out a Request for Waiver of Overpayment Recovery. This form is attached.