发送请求下面的 {     "stock_type":"NORMAL",     "coupon_use_rule":{         "available_merchants":[             "xxxxx"         ],         "combine_use":false,         "fixed_normal_coupon":{             "coupon_amount":1000,             "transaction_minimum":10001         }     },     "no_cash":true,     "stock_use_rule":{         "prevent_api_abuse":false,         "natural_person_limit":false,         "max_amount":10000000,         "max_coupons_per_user":100,         "max_coupons":10000     },     "stock_name":"测试上限数量O",     "available_end_time":"2022-01-01T00:00:00.000+08:00",     "comment":"测试上限数量",     "pattern_info":{         "background_color":"COLOR070",         "coupon_image":"https://wxpaylogo.qpic.cn/wxpaylogo/xxxx/0",         "merchant_logo":"https://wxpaylogo.qpic.cn/wxpaylogo/xxxx/0",         "description":"xxxxxx"     },     "belong_merchant":"xxxxxxx",     "out_request_no":"138597230220211222113232djq99999999",     "available_begin_time":"2021-12-23T00:00:00.000+08:00" }