The name in the Customer Name field was incorrect for the sales receipt that was entered and the credit card payment has been processed via Merchant Services.
The Sales Receipt with the incorrect information will have to be deleted. QuickBooks will not allow the Customer Name field in a Sales Receipt used in a processed payment to be changed. Once the Sales Receipt is deleted a new Sales Receipt can be created with the correct Customer Name.
Note: Deleting the Sales Receipt with the incorrect customer name will not cancel the payment that was already processed.