https://api.weixin.qq.com/wxa/sec/order/upload_combined_shipping_info?access_token=xx，然后参数是：{

    "order_key": {

        "order_number_type": 2,

        "mchid": "16048383xx",

        "transaction_id": "4335402246202603024152773539"

    },

    "sub_orders": [

        {

            "order_key": {

                "order_number_type": 2,

                "mchid": "16048383xx",

                "transaction_id": "4335402246202603024152773539"

            },

            "delivery_mode": 2,

            "logistics_type": 1,

            "is_all_delivered": true,

            "shipping_list": [

                {

                    "tracking_no": "YT2537809855393",

                    "express_company": "YTO",

                    "item_desc": "微信气泡狗零钱包*1",

                    "contact": {

                        "consignor_contact": "021-**34-12"

                    }

                }

            ]

        }

    ],

    "upload_time": "2022-12-15T13:29:35.120+08:00",

    "payer": {

        "openid": "o6c6a5Qm91Ch2tX7bLsbcW7josrk"

    }

}

提示：{

    "errcode": 10060001,

    "errmsg": "支付单不存在 rid: 69a8e196-3a6b39ee-4fa03e46"

}

这个transaction_id是支付时合单支付里面的sub_order里面的transactionId