When a customer returns the merchandise, the refund is issued by the same method as the payment credit card purchases are refunded by crediting the credit card account; cash purchases are refunded in cash. When a customer pays by cheque, how can you enter the refund by cheque in Sage 50? Can the transaction be completed in the Sales Journal? Why or why not? 

For one of the regular customers, a credit sale of $200 was recorded with the usual default Tax code GP. The total invoice amount was $226. However, the customer had been told that the $200 price would be inclusive of taxes  Tax code IN should have been used. Therefore, the customer was overcharged by 13%. The error was not noticed until after the customer had made the full payment for the overcharged amount. What options does one have to correct this error if the payment has not yet been recorded?