In contrast to SIGN DE
a "transaction" (= receipt in SIGN AT
) is an atomic unit.
receipts in SIGN AT
don't have states. A receipt cannot be canceled.
If a mistake happens during the recording of a receipt, you can fix it with a cancellation receipt ("Stornobeleg" in German).
For example, if the cashier enters the incorrect amount of 500
euros, you should create a new receipt using the type CANCELLATION
with the total gross amounts of -500
. This will correct the incorrectly recorded receipt. After that create a new receipt with the correct gross amounts.