So we have a partner that sells products on their site. We want to keep track of the number of items a user purchases coming from our site.
For example, We refer a user to buy a certain product from our partner site. The user clicks on the link and goes to the product page. Instead of buying one, he decides to buy 5 of those items from our partner site.
How do we keep track of the number of items the user purchases? A pixel tracker can only capture so much right?