Create Promotion Feed for FeedAPIs For Bing Shopping /MS
b. GENERIC_CODE: Select the "Generic Code" option, if, during the checkout, they need to put in any code despite fulfilling the other promotion criteria. You will have to submit a promo code in the next field if you select the "Generic Code" option.
5. Generic_redemption_code: Generic redemption code is the code your customers are going to use while claiming the benefit of promotion during checkout. Please mention it here.
Bing needs other parameters like the Start time on the starting date, the End time on the ending date, and the Timezone of the store also.
How to submit a Promotions Feed?