> ## 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 Customer

> This method will change the customer associated with a license. If the customer is not specified (for example, if CustomerId=0) or the customer with the provided ID does not exist, any customer that was previously...

This method will change the customer associated with a license. If the customer is not specified (for example, if CustomerId=0) or the customer with the provided ID does not exist, any customer that was previously
associated with the license will be dissociated.

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

### Parameters

| **Parameter** | **Description** | **Remarks** |
| - | - | - |
| ProductId | the product id (=\*\*\[ProductId] \*\*) | required |
| Key | the serial key string | required |
| CustomerId | The id of the customer that will be associated with the license. If it is 0 or not found, any customer that was previously associated will be removed. | optional, 0 by default. |
| 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":""}
```

### Errors

| **Error** |
| - |
| Access denied. |
| The input parameters were incorrect. |
| Could not find the product. |
| Could not find the key. |
| Customer not found, so current key no longer references any customer. |