Select A/R Records from the Accounts Receivable menu, and the A/R Records window opens.
Check the box(es) beside the invoice(s) or credit memo(s) you wish to void or reverse, and click the Void/Reverse button. A popup window opens enabling you to set the void date(s).
Edit the void date(s) as needed, and click OK. The journal entries for the void/reversal are created, and the new status of the invoice/credit memo is displayed in the A/R Records window.