# DescribeAvailableNats

## 1. API Description

This API (DescribeAvailableNats) is used to obtain list of NAT gateways that can be bound to a border gateway.

## 2. Input Parameters

The following request parameter list only provides API request parameters.

| Parameter Name | Required | Type   | Description        |
| -------------- | -------- | ------ | ------------------ |
| zbgId          | Yes      | String | Border gateway ID. |

## 3. Output Parameters

| Parameter Name | Type            | Description                                                                                                           |
| -------------- | --------------- | --------------------------------------------------------------------------------------------------------------------- |
| requestId      | String          | <p>The unique request ID, which is returned for each request.</p><p>RequestId is required for locating a problem.</p> |
| natIds         | Array of String | List of NAT gateway IDs.                                                                                              |

## 4. Code Example

{% tabs %}
{% tab title="Example" %}
**Obtain list of NAT gateways that can be bound to a border gateway.**

```json
POST /api/v2/zec HTTP/1.1
Host: console.zenlayer.com
Content-Type: application/json
X-ZC-Action: DescribeAvailableNats
<Common Request Params>

Request:
{
  "zbgId": "xxx"
}

Response:
{
  "requestId": "TBFC01FCF-6439-4530-ADBC-16809F0C3E8F",
  "response": {
    "requestId": "TBFC01FCF-6439-4530-ADBC-16809F0C3E8F",
    "natIds": ["xxx"]
  }
}
```

{% endtab %}
{% endtabs %}

## 5. Developer Resources

Zenlayer Cloud API 2.0 integrates [SDKs](https://docs.console.zenlayer.com/api-reference/api-introduction/toolkit/api-sdk)，to make it easier for you to call APIs. More programming languages will be supported.

## 6. Error Codes

The following only lists the error codes related to the API business logic. For other error codes, see [Common Error Codes](https://docs.console.zenlayer.com/api-reference/api-introduction/instruction/commonerrorcode).

| HTTP Status Code | Error Code               | Description                    |
| ---------------- | ------------------------ | ------------------------------ |
| 404              | INVALID\_ZBG\_NOT\_FOUND | Border gateway does not exist. |