http请求方式：POST
https://api.weixin.qq.com/product/coupon/update?access_token=xxxxxxxxx

{
    "type": 1,
    "name" : "双十一特惠满100-50",  //长度 <= 10
    "discount_info" : 
    {
        "discount_condition" : 
        {
            "product_cnt" : 10,//商品折扣券填
            "product_ids" : //商品券填
            [
                1673110742,
                1673110743
            ],
            "product_price" : 100//满减券填
        },
        "discount_fee" : 50,//满减金额
        "discount_num" : 10//折扣券填  折扣*1000
    },
    "ext_info" : 
    {
        "jump_product_id" : 1673110742,//商品券可以填，领取后跳转
        "notes" : "备注",
        "valid_time" : 1673110742,  // valid_type=1时与valid_info.start_time一致, valid_type=2时商家自己填一个绝对开始时间
        "invalid_time" : 1673110742 // valid_type=1时与valid_info.end_time一致, valid_type=2时商家自己填一个绝对结束时间
    },
    "promote_info" : 
    {
        "customize_channel" : "//自定义推广渠道,具体内容",
        "promote_type" : 1     //推广类型,1:店铺内推广,2:自定义推广渠道
    },
    "receive_info" : // 允许用户领取优惠券的设置
    {
        "end_time" : 1673110742,
        "limit_num_one_person" : 1,
        "start_time" : 1673110742,
        "total_num" : 100
    },
    "valid_info" : 
    {
        "end_time" : 1673110742,        //绝对生效开始时间, valid_type=1时必填
        "start_time" : 1673110742,      //绝对生效结束时间, valid_type=1时必填
        "valid_day_num" : 1,            //相对生效时间时长, 以用户领到券的时候开始算, valid_type=2时必填
         "valid_type" : 1
    }
}

{
    "errcode": 0,
    "errmsg": "ok",
    "data": {
        "coupon_id": 111
    }
}