# Manually trigger domain name back-to-source forwarding rule update - UpdateNapFwdRuleDomainResolution

## Overview

Manually trigger domain name back-to-source forwarding rule update






## Definition

### Public Parameters

| Parameter Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **Action**     | string  | Corresponding API command name, the current API is `UpdateNapFwdRuleDomainResolution`.                      | **Yes** |
| **PublicKey**  | string  | The user's public key can be obtained from [Console](https://console.netlake.cn/uaccount/api_manage)                                             | **Yes** |
| **Signature**  | string  | User signature generated based on public key and API command, see [Signature Algorithm](/docs/api/summary/signature.md)  | **Yes** |

### Request Parameters

| Parameter Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **ResourceId** | string | Resource ID |**Yes**|
| **RuleIndex** | int | Index of the rule to be modified |**Yes**|

### Response Field

| Field Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **RetCode** | int | Return status code. If it is 0, it means successful return. If it is not 0, it means failure. |**Yes**|
| **Action** | string | Operation command name. |**Yes**|
| **Message** | string | Returns an error message, providing detailed description when `RetCode` is non-zero. |No|




## Example

### Request Example
    
```
https://api.netlake.cn/?Action=UpdateNapFwdRuleDomainResolution
&TopOrganizationId=1
&OrganizationId=1
&ResourceId=WEVDFouu
&RuleIndex=1
```

### Response Example
    
```json
{
  "Action": "UpdateNapFwdRuleDomainResolutionResponse",
  "RetCode": 0
}
```