tracking discounts with Enhanced E-commerce
I'm not sure how to achieve the following. On this website you can compile your transaction using just 1 form by using a switch for each component. Each switch is either an additional product or an additional discount. How can I track the discounts in such a way that it becomes part of the complete transaction? So that I can analyse later which transactions contained discount X for example? Use products (with negative % of revenue) or promotions maybe?
Hope it's clear and that you can help out.