# Apply for Certificate Revocation - RevokeCertificate

## Overview

Apply for Certificate Revocation






## Definition

### Public Parameters

| Parameter Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **Action**     | string  | Corresponding API command name, the current API is `RevokeCertificate`.                      | **Yes** |
| **PublicKey**  | string  | The user's public key can be obtained from [Console](https://console.genesissai.com/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 |
|:---|:---|:---|:---|
| **CertificateID** | int | Certificate Number of Purchase |**Yes**|
| **Reason** | string | Reason for revoking the certificate |**Yes**|
| **RevokeLetter** | string | This parameter needs to be provided for the revocation of OV, EV certificates. File base64 encoding. |**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.genesissai.com/?Action=RevokeCertificate
&RevokeLetter=GSIipMNU
&CertificateID=1
&Reason=dismiss
```

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