namespace OAuthBundleEntity;

use FOSOAuthServerBundleEntityClient as BaseClient;
use DoctrineORMMapping as ORM;

/**
 * @ORMEntity
 * @ORMTable("oauth_client")
 */
class Client extends BaseClient
{
    /**
     * @ORMId
     * @ORMColumn(type="integer")
     * @ORMGeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORMColumn(type="string")
     */
    protected $name;

    public function __construct()
    {
        parent::__construct();
    }

    /**
     * @return string
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * @param $name
     * @return Client
     */
    public function setName($name)
    {
        $this->name = $name;
        return $this;
    }

    /**
     * @param mixed $id
     */
    public function setId($id)
    {
        $this->id = $id;
    }

    /**
     * @return mixed
     */
    public function getId()
    {
        return $this->id;
    }

}

$client = new Client();
    $client->setId(4);
    $client->setRandomId('1wy8z9ayt6kgsw0s4cwk04ogs884cg08kkgg04gso4kckcscog');
    $client->setRedirectUris(array('http://dnsee.com'));
    $client->setSecret('59az3u43xn4so4g4wswscso4kookwsw00488oogw8kw4w4wgg0');
    $client->setAllowedGrantTypes(array('token', 'authorization_code','http://doing.com/grants/carsharing' ,'refresh_token'));
    $client->setName('CarsharingApp');

    $manager->persist($client);
    $manager->flush();

DoctrineDBALExceptionNotNullConstraintViolationException: An exception occurred while executing 'INSERT INTO oauth_client (name) VALUES (?)' with params ["TestClient"]:

SQLSTATE[HY000]: General error: 1364 Field 'random_id' doesn't have a default value