XML data transformation Problem using XSLT - xslt

Question

My Input File is:
<product>
<a001>12345</a001>
<a002>02</a002>
<a197>College</a197>
<b207>College-Higher Educational</b207>
<othertext>
<d102>01</d102>
<d103>02</d103>
<d104>Some Data</d104>
</othertext>
<othertext>
<d102>02</d102>
<d103>02</d103>
<d104>Some Data</d104>
</othertext>
<othertext>
<d102>04</d102>
<d103>02</d103>
<d104>Some Data</d104>
</othertext>
</product>
From above input file I want to transform data to following output data:
If <d102> is 01 then replace it with <x426> 03
If <d102> is 02 then replace it with <x426> 02
If <d102> is 04 then replace it with <x426> 04
Desired Output Data is:
<product>
<a001>12345</a001>
<a002>02</a002>
<a197>College</a197>
<b207>College-Higher Educational</b207>
<collateraldetails>
<textcontent>
<x426>03</x426>
<x427>00</x427>
<d104>Some Data</d104>
</textcontent>
<textcontent>
<x426>02</x426>
<x427>00</x427>
<d104>Some Data</d104>
</textcontent>
<textcontent>
<x426>04</x426>
<x427>00</x427>
<d104>Some Data</d104>
</textcontent>
</collateraldetails>
<contentdetails>
<contentitem>
<b288>Main Title</b288>
</contentitem>
</contentdetails>
</product>
What I have tried is
<xsl:template match="product/othertext">
<xsl:element name="collateraldetail"/>
<xsl:for-each select="othertext">
<xsl:choose>
<xsl:when test="d102[text()=01]">
<xsl:element name="textcontent">
<xsl:element name="x426">03</xsl:element>
<xsl:element name="x427">00</xsl:element>
<xsl:element name="d104">
<xsl:value-of select="d104"/
</xsl:element>
</xsl:element>
</xsl:when>
<xsl:when test="d102[text()=02]">
<xsl:element name="textcontent">
<xsl:element name="x426">02</xsl:element>
<xsl:element name="x427">00</xsl:element>
<xsl:element name="d104">
<xsl:value-of select="d104"/>
</xsl:element>
</xsl:element>
</xsl:when>
<xsl:when test="d102[text()=04]">
<xsl:element name="textcontent">
<xsl:element name="x426">04</xsl:element>
<xsl:element name="x427">00</xsl:element>
<xsl:element name="d104">
<xsl:value-of select="d104"/>
</xsl:element>
</xsl:element>
</xsl:when>
</xsl:for-each>
<xsl:element name="contentdetails">
<xsl:element name="contentitem">
<xsl:element name="b288">Main Title</xsl:element>
</xsl:element>
</xsl:element>
</xsl:template>
I am not able to get desired output from this code. If I wrap all <othertext> in some parent tag, then I get desired output but not in current scenario.

Answer 1

I am guessing you want to do something like:
XSLT 1.0
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>
<!-- identity transform -->
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="/product">
<xsl:copy>
<xsl:apply-templates select="*[not(self::othertext)]"/>
<collateraldetails>
<xsl:apply-templates select="othertext"/>
</collateraldetails>
</xsl:copy>
</xsl:template>
<xsl:template match="othertext">
<textcontent>
<xsl:apply-templates/>
</textcontent>
</xsl:template>
<xsl:template match="d102">
<x426>
<xsl:choose>
<xsl:when test=".='01'">03</xsl:when>
<xsl:when test=".='02'">02</xsl:when>
<xsl:when test=".='04'">04</xsl:when>
</xsl:choose>
</x426>
<x427>00</x427>
</xsl:template>
<xsl:template match="d103"/>
</xsl:stylesheet>
But your output shows other changes for which you did not provide any explanation or logic.