protected function GetOrderOrPayIdAuthenticationArray()
    {
        $aAuthArray = array();
        if (isset($this->aXMLResponseData['PAYID']) && !empty($this->aXMLResponseData['PAYID'])) {
            $aAuthArray = array('PAYID' => $this->aXMLResponseData['PAYID']);
        } elseif (isset($this->aPaymentUserData['ORDERID']) && !empty($this->aPaymentUserData['ORDERID'])) {
            $aAuthArray = array('ORDERID' => $this->aPaymentUserData['ORDERID']);
        }

        return $aAuthArray;
    }