GA 4 has few events that have discount property. From the official documentation: https://developers.google.com/gtagjs/reference/ga4-events#purchase
Discount - Monetary value of discount associated with a purchase.
But how it works with Price / Value properties?
I want to log that I sold a product costing 1000 EUR with 10% discount. Should I report Discount 100, Price & Value 1000? Or maybe Price/Value should be 1100 and then Discount 100?