Java EE (Java Enterprise Edition) General Discussion

I have a problem to specify the element namespace in output XML file after XSLT transformation. Here is my testing stylesheet file:

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet
		xmlns:env="test:envelope"
		xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
		xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		version="2.0">

	<xsl:output method="xml" indent="yes" omit-xml-declaration="yes"/>

	<xsl:template match="/">
        <env:envelope xsi:schemaLocation="test:envelope envelope.xsd">
            <env:Id>Test ID</env:Id>
            <env:CreDt>2007-08-01</env:CreDt>
            
            <env:Msg.01 xmlns="test:Msg:01">
                <xsl:call-template name="Msg01-Tmpl" />
            </env:Msg.01>
            
            <env:Msg.02 xmlns="test:Msg:02">
                <xsl:call-template name="Msg02-Tmpl" />
            </env:Msg.02>
        
        </env:envelope>
    </xsl:template>
        
    <xsl:template name="Msg01-Tmpl">
        <Name>Test Msg 01 Name</Name>
    </xsl:template>

    <xsl:template name="Msg02-Tmpl">
        <Nm>Test Msg 02 Nm</Nm>
    </xsl:template>
    
</xsl:stylesheet>

The output is:

<env:envelope xmlns:env="test:envelope" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="test:envelope envelope.xsd">
<env:Id>Test ID</env:Id>
<env:CreDt>2007-08-01</env:CreDt>
<env:Msg.01 xmlns="test:Msg:01">
<Name xmlns="">Test Msg 01 Name</Name>
</env:Msg.01>
<env:Msg.02 xmlns="test:Msg:02">
<Nm xmlns="">Test Msg 02 Nm</Nm>
</env:Msg.02>
</env:envelope>

I don't know why the highlighted part is generated. Please help!