post https://api.voucherify.io/v1/promotions/tiers//redemption
To redeem a promotion, you create a redemption object passing a context. In the previous step, you should learn about active promotions through API method for validation. That validation method will return a list of active promotion tiers identified by ID.
Redemption rollback
Do you need to undo a redemption? You can do it with redemption rollback.
Returns
Returns a redemption object if the redeem operation succeeded. Returns an error if something goes wrong.