Вывод артикула товара

<shop_item id="181">
         <shortcut_id>0</shortcut_id>
         <shop_tax_id>0</shop_tax_id>
         <shop_seller_id>0</shop_seller_id>
         <shop_group_id>609</shop_group_id>
         <shop_currency_id>1</shop_currency_id>
         <shop_id>3</shop_id>
         <shop_producer_id>0</shop_producer_id>
         <shop_measure_id>0</shop_measure_id>
         <type>0</type>
         <name>Цветной багет 01-01-40</name>
         <marking>01-01-40</marking>
         <vendorcode></vendorcode>
         <description>&lt;p&gt;Мин. заказ 1 хлыст (длина от 2.5 до 3 м.п.)&lt;/p&gt;</description>
         <image_large>item_181.jpg</image_large>
         <image_small>small_item_181.jpg</image_small>
         <weight>0.00</weight>
         <active>1</active>
         <siteuser_group_id>-1</siteuser_group_id>
         <sorting>0</sorting>
         <path>czvetnoj-baget-01-01-40</path>
         <seo_title></seo_title>
         <seo_description></seo_description>
         <seo_keywords></seo_keywords>
         <indexing>1</indexing>
         <image_small_height>260</image_small_height>
         <image_small_width>260</image_small_width>
         <image_large_height>900</image_large_height>
         <image_large_width>900</image_large_width>
         <yandex_market>1</yandex_market>
         <yandex_market_bid>0</yandex_market_bid>
         <yandex_market_cid>0</yandex_market_cid>
         <manufacturer_warranty>0</manufacturer_warranty>
         <country_of_origin></country_of_origin>
         <yandex_market_sales_notes></yandex_market_sales_notes>
         <user_id>19</user_id>
         <siteuser_id>0</siteuser_id>
         <modification_id>0</modification_id>
         <guid>3B370788-ECBD-7FF0-1298-24339327C55A</guid>
         <showed>135</showed>
         <length>0.00</length>
         <width>0.00</width>
         <height>0.00</height>
         <apply_purchase_discount>1</apply_purchase_discount>
         <delivery>1</delivery>
         <pickup>1</pickup>
         <store>0</store>
         <adult>0</adult>
         <cpa>1</cpa>
         <deleted>0</deleted>
         <url>/shop/bagety-ramki/derevyannye/czvetnoj-baget-01-01-40/</url>
         <date>21.12.2017</date>
         <datetime>21.12.2017 13:31:44</datetime>
         <start_datetime>0000-00-00 00:00:00</start_datetime>
         <end_datetime>0000-00-00 00:00:00</end_datetime>
         <dir>/upload/shop_3/1/8/1/item_181/</dir>
         <rest>0.00</rest>
         <reserved>0</reserved>
         <price>189.00</price>
         <discount>0.00</discount>
         <tax>0.00</tax>
         <price_tax>189.00</price_tax>
         <currency>руб.</currency>
      </shop_item>

<xsl:apply-templates select="/shop/item">                              
                              <xsl:with-param name="value" select="marking" />
                           </xsl:apply-templates>

<xsl:if test="marking_of_goods != ''">
<xsl:value-of disable-output-escaping="yes" select="marking_of_goods"/></xsl:if>  

<xsl:template match="shop_item">

<xsl:value-of  select="marking"/>