When not the whole amount is refunded, a reason for this correction can be set. This will only have an affect if UnitAmountToRefund is lower than the total amount of this return line.
Entity type: RefundCorrectionReason
Entity type: ReturnReason
When a ReturnWithoutProducts is done, but not the full amount should be refunded, a different amount can be provided - cannot exceed the worth of the returned products
Entity type: OrderLine