This API call returns a new subscription id for your Synced account which can be used for any further calls in the API. 
API Function: regenerate_subscription_id
| Name | Type | Description | 
| username | string | Your API username. You should have received this with your account | 
| subscription_id | string | Your Subscription ID. You can copy or regenerate it from your API management interface. | 
 
Response fields:
| Name | Type | Description | 
| code | string | The result of the operation, can be success or error | 
| message | string | If code is error this field will be filled with error message | 
| api_subscription_id | string | If code is success this field will be filled with the new api subscription id which can be used for any further calls in the api | 
                    
                    
                    
                    
                    
                    
                                            
<?php   
$api_username      = '*******';
$api_subscription  = '*******';
try
{
        $client     = new SoapClient('https://synced.io/api/v2_account?wsdl');
        $response   = $client->regenerate_subscription_id($api_username, $api_subscription);
        print_r($response);            
} catch (Exception $e)
{
    print_r($e);
    echo $client->__getLastRequest() . "\n";
    exit;
}
?>