I’ve read a few tutorials on here about tagging products and applying discounts but what I am trying to do is be able to tag individual items on a ticket and then apply a 20% discount only to those tagged items if a barcode is scanned. I am able to discount the whole ticket on barcode scanned but not only tagged items.
Look into using product tags. If you’re already able to add discounts based on barcode scanned, it should be relatively easy to then create constraints to only apply discount to those products having a certain product tag.
you could use ticket discount but use a fixed calculation and update with expression that uses only the values of applicable products.
I do this for my food and drink discount loyalty setup and also for llanned eat out to help out in UK
See that topic for ideas
In the ‘Amount’ field, the report tag totals all products for the discount group ‘Emp’ that are not voided/comped (ODI stands for Order Decrease Inventory) and is multiplied by .25 to return discount amount.