It's ok to undo the application of a coupon. If a shopper wants to save a coupon instead of using it, the cashier can delete individual rebate lines.
Liquid Barcodes will delete the reservation on the coupon that was used to apply this rebate line. This action will not trigger the recalculation of the entire basket.
Benefits and use case
If a shopper has activated the wrong coupon or changes her mind, it's operationally efficient to allow the cashier to modify the transaction in an easy way in-store.
The POS deletes rebate lines using the Applicator Service - Delete Rebate service.