protected function checkRequiredFieldsPayPalAddress($addressData)
    {
        $reqFields = \OxidEsales\Eshop\Core\Registry::getConfig()->getConfigParam('aMustFillFields');

        $result = true;

        foreach ($reqFields as $field) {
            if (strpos($field, 'oxaddress__') === 0 && empty($addressData[str_replace('oxaddress__', '', $field)])) {
                return false;
            }
        }

        return $result;
    }