> For the complete documentation index, see [llms.txt](https://api.esignon.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://api.esignon.net/eng-1/issued/token.md).

# issue authentication token

## issue authentication token

<mark style="color:green;">`POST`</mark> `https://docs.esignon.net/api/:companyId/login`&#x20;

When using eSignon API, an authentication token is absolutely required. This API issues the required user's authentication token.( accesstoken )

#### Path Parameters

| Name      | Type   | Description |
| --------- | ------ | ----------- |
| companyId | string | Company ID  |

#### Headers

| Name         | Type   | Description      |
| ------------ | ------ | ---------------- |
| Content-Type | string | application/json |

#### Request Body

| Name                 | Type   | Description   |
| -------------------- | ------ | ------------- |
| header               | object |               |
| header.request\_code | string | 1001Q         |
| body                 | object |               |
| body.memb\_email     | string | User email    |
| body.memb\_pwd       | string | User password |

{% tabs %}
{% tab title="200 성공" %}

```javascript
{
  "header": {
    "response_code": "1001A",
    "result_code": "00",
    "result_msg": "You have successfully logged in.",
    "session_id": ""
  },
  "body": {
    "access_token": "{accesstoken}",
    "comp_id": "{Company ID}",
    "device_id": "{Device ID}",
    "expire_date": "{Expired}",
    "memb_email": "{User email}"
  }
}
```

{% endtab %}
{% endtabs %}

## Request Body Example

```javascript
{
  "header": {
    "request_code": "1001Q",
  },
  "body": {
    "memb_email": "{User email}",
    "memb_pwd": "{User password}",
  }
}
```

## Response Body Example

```javascript
{
  "header": {
    "response_code": "1001A",
    "result_code": "00",
    "result_msg": "You have successfully logged in.",
    "session_id": ""
  },
  "body": {
    "access_token": "{accesstoken}",
    "comp_id": "{Company ID}",
    "device_id": "{Device ID}",
    "expire_date": "{Expired}",
    "memb_email": "{User email}"
  }
}
```

## Response Body  header.result\_code

| Code | **Description** | **Reference**                                                                     |
| ---- | --------------- | --------------------------------------------------------------------------------- |
| 00   | success         | success                                                                           |
| 10   | Fail            | Your login information is incorrect.                                              |
| 12   | Fail            | Parsing failed because the body information of the received message is incorrect. |
| 95   | Fail            | The company is unable to call the API. Please contact the customer center.        |
| 99   | Fail            | Unexpected exception (incorrect format)                                           |