Why coupon redemption count is more than the coupons actually applied to the Subscription?

This article covers

Difference between coupon redemptions and applied numbers

Solution

When you check the redemption count of a coupon

And when you check in the Subscription index page

The values may not match. It would be that the redemptions count is more than the number of subscriptions that the coupon applied to.

That is because there are cases in which a Subscription_Change is scheduled to happen at a future date and the coupon must have been applied that would come into effect when that subscription change occurs. So technically, the coupon has been redeemed, but currently, it is not showing in the Subscription.