protected function GetErrorURL($sStepName = '')
    {
        if (empty($sStepName)) {
            $sStepName = 'shipping';
        }
        $sURL = false;
        $oShippingStep = TdbShopOrderStep::GetStep($sStepName);
        /** @var $oShippingStep TdbShopOrderStep */
        if (!is_null($oShippingStep)) {
            $sURL = $oShippingStep->GetStepURL(true, true);
            if ('/' == substr($sURL, -1)) {
                $sURL = substr($sURL, 0, -1);
            }
        }

        return $sURL;
    }