Bonus product for a promotion.
| Property Name | Type | Description | Available Version |
|---|---|---|---|
| adjustmentBasisReference | String | ID of the associated coupon, if applicable. | 58.0 |
| bonusProductId | String | ID of the bonus product. | 58.0 |
| causeId | String | ID of the related promotion. | 58.0 |
| qualifyingItems | List<ConnectApi.PromotionCartItemKey> | List of qualifying cart items and their related quantity. | 58.0 |