change obligation
The forced refund function forces the operator to enter the amount given by the customer. If the amount is too small to pay for the transaction, or if it was not entered, the transaction will not be completed. For example, the amount given by the customer is entered as 2 + 0+ , + 5 for 20.50 of the main currency. Do not rank the change obligation according to the payment method in your macro, but at the beginning of the macro.
Further documentation:
Customer display and customer monitor
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