Dear Sirs<br>I&#39;m trying to produce a PDF from a docbook xml file. I need to use a customization layer but I keep receiving an error message like this:<br>[Saxon6.5.5] ERROR: Document root element for FO output must be one of the following elements: appendix article bibliography book chapter colophon dedication glossary index part preface qandaset refentry reference sect1 section set setindex <br>
and<br>SystemID: /Users/Sandro/Documents/quaderni_storicamente/index.xml<br>Engine name: Saxon6.5.5<br>Severity: error<br>Description: Cannot apply cascading transformation. Reason: Processing terminated by xsl:message at line 207<br>
<br>Here is the xsl <br>&lt;?xml version=&#39;1.0&#39;?&gt; <br>&lt;xsl:stylesheet  <br>    xmlns:xsl=&quot;<a href="http://www.w3.org/1999/XSL/Transform">http://www.w3.org/1999/XSL/Transform</a>&quot; <br>    xmlns:fo=&quot;<a href="http://www.w3.org/1999/XSL/Format">http://www.w3.org/1999/XSL/Format</a>&quot;<br>
    version=&quot;1.0&quot;&gt; <br>    &lt;xsl:import href=&quot;fo/docbook.xsl&quot;/&gt; <br>    &lt;xsl:template match=&quot;/book/chapter/para[@role = &#39;intro&#39;]&quot;&gt;<br>        &lt;fo:block border=&quot;0.5pt solid blue&quot;<br>
            padding=&quot;3pt&quot;<br>            xsl:use-attribute-sets=&quot;normal.para.spacing&quot;&gt;<br>            &lt;xsl:apply-templates/&gt;<br>        &lt;/fo:block&gt;<br>    &lt;/xsl:template&gt;<br>&lt;/xsl:stylesheet&gt;  <br>
<br>Thank you in advance<br><br>Claudio<br>