Use this procedure to enter an adjustment that will increase the customer's charge account balance. If the customer is purchasing an item, don’t issue a debit memo, enter a sale via the Sales menu. If you need to reverse a payment on account, choose the Receive a Payment on Account option from the Accounts Receivable menu and enter a negative payment. Also don’t change a customer’s balance by just making a change in the customer’s balance from the Edit or Open Charge Accounts option from the Customer Maintenance menu.
To decrease the customer's balance, see the previous chapter, Credit Memos.