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Click Billing in the left-hand navigation panel.
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On the Billing Center tab, find the appropriate member.
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Click New Sales Receipt.
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Select the same fee item used when creating the original sales receipt.
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In the Price Each column, enter a negative amount.
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Click Save. The refund will be displayed as a negative sales receipt in the list of transactions. You will now need to follow your business process for actually giving the money back to the contact.
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