public function import($data)
    {
        if (isset($data['OXUSERNAME'])) {
            $id = $data['OXID'];
            $userName = $data['OXUSERNAME'];

            $user = oxNew(\OxidEsales\Eshop\Application\Model\User::class, "core");
            $user->oxuser__oxusername = new \OxidEsales\Eshop\Core\Field($userName, \OxidEsales\Eshop\Core\Field::T_RAW);

            if ($user->exists($id) && $id != $user->getId()) {
                throw new Exception("USER $userName already exists!");
            }
        }

        return parent::import($data);
    }