As with the action bopmai can calculate the withholding taxes that are valid for the country of Thailand.Need to edit by canceling the invoice and make payment to the correct interface.
Because the system can not calculate the correct tax withholding for the country must resolve on the cancellation invoice interface and then make payment to be renewed.
Since the system cannot calculate withholding tax right for Thailand must แก้ไขด้วย cancellation of invoices, interface What do payment right back up again.