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After clicking Place Order, you  buy products successfull.Then, you easily access to Transaction Reporting online.

Or  go to Backend->Sale->Order,  you choose one of orders to >Sales->Orders then choose View to view infomation about transactionorder.

  In case, you want to refund your product. You can choose Invoices-> Credit Memo:

   Customers can choose Refund Offline or Refund dependent on their request. Click Refund, refund successfully!

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