# 오류 
HTTP 코드 400에 대한 오류 코드:
<table>
<thead>
<tr>
<th>코드</th>
<th>메시지</th>
</tr>
</thead>
<tbody>
<tr>
<td>INVALID_USER</td>
<td>잘못된 게임유저</td>
</tr>
<tr>
<td>INVALID_PARAMETER</td>
<td>잘못된 매개 변수</td>
</tr>
<tr>
<td>INVALID_SIGNATURE</td>
<td>잘못된 서명</td>
</tr>
<tr>
<td>INCORRECT_AMOUNT</td>
<td>잘못된 금액</td>
</tr>
<tr>
<td>INCORRECT_INVOICE</td>
<td>잘못된 인보이스</td>
</tr>
</tbody>
</table>

```
HTTP/1.1 400 Bad Request
{
    "error":{
        "code":"INVALID_USER",
        "message":"Invalid user"
    }
}
```