protected function _isPaymentResponseSessionInvalid()
    {
        /** @var OxpsPaymorrowModule $oModule */
        $oModule = oxRegistry::get('OxpsPaymorrowModule');

        // Get Paymorrow response from session
        $aPaymorrowResponse = $oModule->getPaymorrowResponseData();

        // The response must exist and be valid
        return (
            !isset($aPaymorrowResponse['order_status'], $aPaymorrowResponse['response_status']) or
            !in_array($aPaymorrowResponse['order_status'], array('VALIDATED', 'ACCEPTED')) or
            ($aPaymorrowResponse['response_status'] !== 'OK')
        );
    }