<xsl:template match ="/">
<t01:root>
<t01:Total_Items>
<xsl:value-of select="count(/ns0:po/ns0:details/ns0:item)" />
</t01:Total_Items>
<t01:Items_collection>
<xsl:for-each select="/ns0:po:ns0:details/ns0:item">
<t01:Item_Position>
<xsl:for-each select="position()" />
</t01:Item_Position>
<t01:name>
<xsl:for-each select="," />
</t01:name>
</xsl:for-each>
</t01:Items_collection>
</t01:root>
</xsl:template>