BizTalk - adding namespace to xml - xslt

Question

I'm new to BizTalk and I'm having problems with adding a namespace to my output file.
I need to get the following output, with the namespace at the root level:
<?xml version="1.0" encoding="utf-8"?>
<TestExternalPO xmlns="http://Test.EDI.TestExternalPO.Schemas">
<Routing/>
<POHeader/>
</TestExternalPO>
My xsd is:
<?xml version="1.0" encoding="utf-16"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:b="http://schemas.microsoft.com/BizTalk/2003"
elementFormDefault="qualified" version="1.0">
<xs:annotation>
<xs:appinfo>
<b:schemaInfo BizTalkServerEditorTool_Version="1.5" root_reference="TestExternalPO"
displayroot_reference="TestExternalPO" standard="XML"
targetNamespace="http://Test.EDI.TestExternalPO.Schemas"
xmlns:b="http://schemas.microsoft.com/BizTalk/2003" />
</xs:appinfo>
</xs:annotation>
My xslt is:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:template match="/">
<xsl:apply-templates select="TestExternalPO"/>
</xsl:template>
<xsl:template match="TestExternalPO">
<TestExternalPO xmlns="http://Test.EDI.TestExternalPO.Schemas">
<Routing>....
Any help greatly appreciated,
Maggs
Update 25-Apr.
Thanks for all the comments.
The above setup works but doesn't give me what I want i.e namespace at root level.
I did test the namespace in the xslt but got an error on BizTalk.
<xsl:template match="TestExternalPO">
<TestExternalPO xmlns="http://Test.EDI.TestExternalPO.Schemas">
<Routing>
<xsl:attribute name="SendPartner">
BizTalk Error - Finding the document specification by message type "http://Test.EDI.TestExternalPO.Schemas" failed. Verify the schema deployed properly.
Below is structure of input file:
<TestExternalPO>
<POHeader>
</POHeader>
<TradingPartnersList>
<TradingPartners>
</TradingPartners>
</TradingPartnersList>
<Contract>
</Contract>
<ItemsList>
<Items>
</Items>
</ItemsList>
</TestExternalPO>
The problem is with my declaration of 'xmlns'.
If I add 'targetNamespace', then output has the targetNamespace at the root element.
This works:
<xsl:template match="TestExternalPO">
<TestExternalPO targetNamespace="http://Test.EDI.TestExternalPO.Schemas">
<Routing>
<xsl:attribute name="SendPartner">
Again thanks for the help.
Maggs

Answer 1

Here's how your xslt should look. You want to exclude namespace so add the prefix to exclude-result-prefixes
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
exclude-result-prefixes="ns0"
xmlns:ns0="http://Test.EDI.TestExternalPO.Schemas">
<xsl:template match="/">
<xsl:apply-templates select="TestExternalPO"/>
</xsl:template>
<xsl:template match="TestExternalPO">
<ns0:TestExternalPO>
<Routing>....