> For the complete documentation index, see [llms.txt](https://docs.console.zenlayer.com/api-reference/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.console.zenlayer.com/api-reference/compute/vm/virtual-machine-instance/cancelinstancetrafficpackagedowngrade.md).

# CancelInstanceTrafficPackageDowngrade

## 1. API Description

This API (CancelInstanceTrafficPackageDowngrade) is used to the API is used to cancel virtual machine data transfer downgrade order.

{% hint style="info" %} <mark style="color:blue;">**Note**</mark>

<mark style="color:blue;">When</mark> [<mark style="color:purple;">`internetChargeType`</mark>](/api-reference/compute/vm/datastructure.md#internetchargetype) <mark style="color:blue;">of a subscription instance is</mark> <mark style="color:blue;">`ByTrafficPackage`</mark><mark style="color:blue;">,</mark> <mark style="color:blue;">Downgrade (target < current) operation will generate an order for the next billing cycle and will take effect by then. You can call this API to cancel the downgrade operation.</mark>
{% endhint %}

## 2. Input Parameters

The following request parameter list only provides API request parameters.

| Parameter Name | Required | Type   | Description                                                                                                                      |
| -------------- | -------- | ------ | -------------------------------------------------------------------------------------------------------------------------------- |
| instanceId     | Yes      | String | <p>Instance ID(s).</p><p>To obtain the instance IDs, you can call DescribeInstances and look for instanceId in the response.</p> |

## 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> |

## 4. Code Example

{% tabs %}
{% tab title="Example" %}
**Cancel data transfer downgrade order.**

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

Request：
{
  "instanceId": "instanceId"
}

Response：
{
  "requestId": "T05992D0C-7E8B-4047-B0C0-780F2CD549D3",
  "response": {  
    "requestId": "T05992D0C-7E8B-4047-B0C0-780F2CD549D3"
  }
}
```

{% endtab %}
{% endtabs %}

## 5. Developer Resources

Zenlayer Cloud API 2.0 integrates [SDKs](/api-reference/api-introduction/toolkit/api-sdk.md)，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](/api-reference/api-introduction/instruction/commonerrorcode.md).

| HTTP Status Code | Error Code | Description |
| ---------------- | ---------- | ----------- |