> ## Documentation Index
> Fetch the complete documentation index at: https://help.cryptolens.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Change Notes

> This method will change the content of the notes field of a given license key.

This method will change the content of the notes field of a given license key.

This method is accessed by [https://api.cryptolens.io/api/key/ChangeNotes](https://api.cryptolens.io/api/key/ChangeNotes)

### Parameters

| **Parameter** | **Description** | **Remarks** |
| - | - | - |
| ProductId | the product id (=\*\*\[ProductId] \*\*) | required |
| Key | the serial key string | required |
| Notes | The new content of the notes field (at most 500 chars) | required |
| v | Method version. | optional. by default, it's 1. |

### Results

| **Parameter** | **Description** | **Remarks** |
| - | - | - |
| Result | This is either **0**(=success) or **1**(=error). | always returned |
| Message | The message that provides additional information about the result. | always returned. |

### Example results

```text theme={null}
{"result":0,"message":null}
```

### Errors

| **Error** |
| - |
| Access denied. |
| The input parameters were incorrect. |
| Could not find the product. |
| Could not find the key. |
| The notes field cannot be more than 500 characters. |