Structured data attributes for promotions feeds
- Eligible channel for promotion [redemption_channel]
 - Promotion destination [promotion_destination]
 - Minimum purchase quantity for promotion [buy_this_quantity]
 - Excluded item group ID [item_group_id_exclusion]
 - Minimum purchase amount [minimum_purchase_amount]
 - Percentage discount amount [percent_off]
 - Monetary discount amount of a promotion [money_off_amount]
 - Promotion title [long_title]
 - Products eligible for promotion [product_applicability]
 - Coupon code required [offer_type]
 - Promotion start date [promotion_effective_dates]
 - Free delivery [free_shipping]
 - Free gift of monetary value [free_gift_value]
 - Free gift description [free_gift_description]
 - Free gift item ID [free_gift_item_id]
 - Shop applicability [store_applicability]
 - Shop codes inclusion [store_codes_inclusion]
 - Shop codes exclusion [store_codes_exclusion]
 - Promotion URL [promotion_url]
 - Google product category exclusion [google_product_category_exclusion]
 - Promotion tags [promotion_tags]
 - Maximum purchase quantity for promotion [limit_quantity]
 - Display dates for promotion [promotion_display_dates]
 - Product ID for promotion [item_id]
 - Fine print for promotion [fine_print]
 - Coupon value type [coupon_value_type]
 - Price for promotion [promotion_price]
 - Excluded item ID [item_id_exclusion]
 - Excluded product types [product_type_exclusion]
 - Excluded brands [brand_exclusion]
 - Promotion ID [promotion_id]