Add coupon codesCopy Pagepost https://api.fastspring.com/coupons/{coupon_id}Path Paramscoupon_idstringrequiredBody Paramscodesarray of stringsrequiredcodes*ADD stringResponses 200Codes successfully added. 400Validation or request error. Returns 200 OK — always check the result field rather than relying on the HTTP status code alone.Updated 26 days ago