XSLT Transform XML with Namespaces

You need to provide a namespace prefix in your xslt for the elements you are transforming. For some reason (at least in a Java JAXP parser) you can't simply declare a default namespace. This worked for me:

<xsl:stylesheet version="1.0" xmlns:t="http://www.test.com/" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xslFormatting="urn:xslFormatting">

    <xsl:output method="html" indent="no"/>

    <xsl:template match="/t:ArrayOfBrokerage">
        <xsl:for-each select="t:Brokerage">
            Test
        </xsl:for-each>
    </xsl:template>

</xsl:stylesheet>

This will catch everything that is namespaced in your XML doc.