API ReferenceReward Grants
Overview
Give eligible customers their rewards without issuing the same reward twice.
A grant is where a configured reward becomes something the customer receives. The API checks that the rule and customer belong to the selected store and that the customer still qualifies. Each rule/customer pair can have only one grant: repeating the request returns it instead of issuing the reward again.
Responses omit internal eligibility snapshots and idempotency keys. There is no manual revoke endpoint: a customer may already have redeemed the coupon or spent the wallet credit. Any supported automatic revocation is handled as SellApp checks changes to the related order.
Use the reward API token ability and the X-STORE header.