Using the processing function "Buy one get one (fix item)", only the Menu Items in the same line item are discounted for a BOGO offer. If the same menu items for BOGO offer are entered separately in the order, then it will not discount the receipt and throw an error.
- Menu items in the same line item: Coffee quantity was updated to 2 instead of entering the coffee separately. Thus 1 coffee price will be discounted for the BOGO offer.
- Same menu items rang separately: It will not qualify for the discount and display a null value.