Our client needs information/statistics regarding how much turnover their vouchers have generated on their webshop.
When a customer applies a voucher on an order, this information is stored on the order, I assume.
Is there some way of retrieving and summarize this data, to clarify the turnover for orders where a voucher has been applied?
The goal is to evaluate their marketing efforts, e.g. vouchers for different marketing channels, and prioritize channels accordingly.
Thank you in advance.