The difference is due to the company's customer settlement. But because the sales receipts on behalf of the company. Make out a receipt, the company added only the remaining amount.
The difference is due to the company instead of paying customers. However, due to the sell-off receipts on behalf of its clients. The company took out a bill to increase the number left.
The difference is caused by the company to pay for the customers. But since the seller receipt on behalf of customers of the company. The company is billing add just the rest.