OfferCategory

[START offer_category_definition] Category of the offer. A base offer is a standard offer available to all customers such as 10% off spending over $100. A base offer restricted by a coupon or payment instrument will have the respective fields set. We also have add on x offers such as ADD_ON_PAYMENT_OFFER. Such offers can be added to other offers to gain additional discounts.

Enums
OFFER_CATEGORY_UNSPECIFIED The UNSPECIFIED or default enum value should not be used in feeds.
OFFER_CATEGORY_BASE_OFFER
OFFER_CATEGORY_ADD_ON_PAYMENT_OFFER
OFFER_CATEGORY_ADD_ON_COUPON_OFFER
OFFER_CATEGORY_ADD_ON_SUBSCRIPTION_OFFER