# 预授权交易退款

#### **接口用途**

- 预授权交易退款操作。

#### **接口地址**

- `https://ebuywebposp-test.e-buychina.com/ebuyweb-posp/api/preauthRefund`

#### **action**

- preauthRefund

**请求参数，中间件===>易百后台**

<table id="bkmrk-%E5%AD%97%E6%AE%B5-%E7%B1%BB%E5%9E%8B-%E6%98%AF%E5%90%A6%E5%BF%85%E5%A1%AB-%E5%AD%97%E6%AE%B5%E6%84%8F%E4%B9%89-%E5%A4%87%E6%B3%A8-t"><thead><tr><th>字段</th><th>类型</th><th>是否必填</th><th>字段意义</th><th>备注</th></tr></thead><tbody><tr><td>traceNo</td><td>String</td><td>是</td><td>收银机流水号</td><td>不允许重复,必须以yyyyMMdd(当天)作为流水号开头+递增序列</td></tr><tr><td>refundAmount</td><td>Price</td><td>是</td><td>退款总金额</td><td>单位：元</td></tr><tr><td>originalTraceNo</td><td>String</td><td>是</td><td>原收银机流水号</td></tr></tbody></table>

**请求报文举例**

```
{
    "traceNo": "99000009100010101732123",
    "refundAmount": 40.8,
    "originalTraceNo": "280123121234567890"
}

```

**返回参数，易百后台===&gt;中件间**

<table id="bkmrk-%E5%AD%97%E6%AE%B5-%E7%B1%BB%E5%9E%8B-%E6%98%AF%E5%90%A6%E5%BF%85%E5%A1%AB-%E5%AD%97%E6%AE%B5%E6%84%8F%E4%B9%89-%E5%A4%87%E6%B3%A8-t-0"><thead><tr><th>字段</th><th>类型</th><th>是否必填</th><th>字段意义</th><th>备注</th></tr></thead><tbody><tr><td>traceNo</td><td>String</td><td>是</td><td>收银机流水号</td><td>不允许重复</td></tr><tr><td>orderNo</td><td>String</td><td>是</td><td>交易订单号</td><td>易百生成</td></tr><tr><td>transDate</td><td>String</td><td>是</td><td>交易时间</td><td>格式为：yyyyMMddHHmmss</td></tr><tr><td>returnCode</td><td>String</td><td>是</td><td>返回码</td><td>00表示交易成功，其他表示失败</td></tr><tr><td>returnDesc</td><td>String</td><td>是</td><td>返回信息</td><td>交易结果描述或错误原因</td></tr><tr><td>paidAmount</td><td>Price</td><td>是</td><td>支付成功总金额</td><td>单位：元</td></tr><tr><td>receiptAmount</td><td>Price</td><td>否</td><td>商户实收金额</td><td>单位：元</td></tr><tr><td>invoiceAmount</td><td>Price</td><td>否</td><td>商户开票金额</td><td>单位：元</td></tr><tr><td>exchangeRate</td><td>Number(8,6)</td><td>否</td><td>汇率</td><td>1外币等于多少人民币</td></tr><tr><td>currency</td><td>String</td><td>否</td><td>货币类型</td><td>例如:CNY</td></tr><tr><td>discountCode</td><td>String</td><td>否</td><td>折扣编码</td><td>由收银机分配，用于入账计折扣类型</td></tr><tr><td>discountNum</td><td>Number</td><td>否</td><td>固定金额折扣数量</td><td>用于入账计折扣类型的数量</td></tr><tr><td>tenderCode</td><td>String</td><td>否</td><td>支付方式编码</td><td>由收银机分配，用于入账计支付方式</td></tr><tr><td>activityProductNo</td><td>String</td><td>否</td><td>活动产品编号</td><td> </td></tr><tr><td>activityProductName</td><td>String</td><td>否</td><td>活动产品名称</td><td> </td></tr><tr><td>goodsDetail</td><td>List&lt;[goodsDetail](https://book.e-buy.com/books/e-buy-B6z/page/3def1)&gt;</td><td>否</td><td>折抵产品明细</td><td>返回后台已抵扣成功的产品明细</td></tr><tr><td>fundChannel</td><td>List&lt;[fundChannel](https://book.e-buy.com/books/e-buy-B6z/page/14bfa)&gt;</td><td>否</td><td>资金渠道</td><td> </td></tr><tr><td>printDetail</td><td>Object&lt;[printDetail](https://book.e-buy.com/books/e-buy-B6z/page/eed5a)&gt;</td><td>否</td><td>打印信息</td><td>如需要在收银小票上打印信息时必填</td></tr><tr><td>memberDetail</td><td>Object&lt;[memberDetail](https://book.e-buy.com/books/e-buy-B6z/page/9fc3d)&gt;</td><td>否</td><td>会员信息</td><td>返回本次交易的会员信息</td></tr><tr><td>voucherDetail</td><td>List&lt;[voucherDetail](https://book.e-buy.com/books/e-buy-B6z/page/8f855)&gt;</td><td>否</td><td>优惠券信息</td><td>返回本次交易的优惠券信息</td></tr></tbody></table>

**返回报文举例**

```
{
    "traceNo": "99000009100010101732123",
    "orderNo": "171698602301",
    "transDate": "20161231120533",
    "returnCode": "00",
    "returnDesc": "SUCCESS",
    "paidAmount": 40.8,
    "receiptAmount": 40.8,
    "invoiceAmount": 40.8,
    "exchangeRate": 6.0939,
    "currency": "CNY",
    "discountCode": "0001",
    "discountNum": 20,
    "tenderCode": "8001",
    "activityProductNo": "2016123102",
    "activityProductName": "支付宝支付",
    "goodsDetail": [
        {
            "goodsCategory": "001",
            "goodsId": "P00001",
            "goodsName": "牙膏",
            "price": 8,
            "quantity": 2,
            "rebateCode": "000",
            "activityNo": "2016123101",
            "memo": "100123456789"
        },
        {
            "goodsCategory": "101",
            "goodsId": "P00002",
            "goodsName": "洗发水",
            "price": 24.8,
            "quantity": 1,
            "rebateCode": "000",
            "activityNo": "2016123101",
            "memo": "100123456789"
        }
    ],
    "fundChannel": [
        {
            "channelNo": "001",
            "channelName": "用户实付现金",
            "channelAmount": "20.8"
        },
        {
            "channelNo": "002",
            "channelName": "用户积分支付",
            "channelAmount": "20"
        }
    ],
    "printDetail": {
        "cardNo64": "622562****8888",
        "bank": "中国银行",
        "paymentOrderNo": "201612315689412157458787",
        "paymentUser": "139****@163.com",
        "pointSale": "20000",
        "qrCode1": "htt://www.api-location-url.com/url",
        "qrCode2": "",
        "qrCode3": "",
        "barCode1": "12345679",
        "barCode2": "",
        "barCode3": ""
    },
    "memberDetail": {
        "memberId": "M000001545",
        "memberName": "TONY",
        "grade": "1",
        "status": "1",
        "balance": 1000.00,
        "pointBalance": 30000
    },
    "voucherDetail": [
        {
            "voucherId": "001",
            "voucherName": "现金优惠券",
            "voucherType": "现金",
            "voucherCode": "123456789",
            "channelAmount": "20.8"
        },
        {
            "voucherId": "002",
            "voucherName": "买一赠一优惠券",
            "voucherType": "买赠",
            "voucherCode": "1232136781",
            "channelAmount": "20.8"
        }
    ]
}
```