XSLT Sort nested xml - xslt

Question

I need to sort the below XML from SAP based on E1EDP01 - POSEX and ACTION, rest of the xml should be copied as it is. Please note that there's E1EDP19 under E1EDP01, which should be copied as it is as well. My XSLT is not working bcoz am not sure what should be the value for the template match. Please help.
<ORDERS05>
<IDOC BEGIN="1">
<E1EDK14 SEGMENT="1">
<QUALF>014</QUALF>
<ORGID>PF01</ORGID>
</E1EDK14>
<E1EDP01 SEGMENT="1">
<POSEX>00020</POSEX>
<ACTION>001</ACTION>
<PSTYP>0</PSTYP>
<MENGE>540.000</MENGE>
<MENEE>RO</MENEE>
<E1EDP19>
<Text> Test 2 </Text>
</E1EDP19>
</E1EDP01>
<E1EDP01 SEGMENT="1">
<POSEX>00030</POSEX>
<ACTION>001</ACTION>
<PSTYP>1</PSTYP>
<MENGE>140.000</MENGE>
<MENEE>AD</MENEE>
<E1EDP19>
<Text> Test 1 </Text>
</E1EDP19>
</E1EDP01>
<E1EDS01 SEGMENT="1">
<SUMID>002</SUMID>
<SUMME>832.2</SUMME>
<SUNIT>USD</SUNIT>
</E1EDS01>
</IDOC>
</ORDERS05>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<!-- -->
<xsl:strip-space elements="*"/>
<!-- -->
<xsl:template match="node()|#*">
<xsl:copy>
<xsl:apply-templates select="node()|#*"/>
</xsl:copy>
</xsl:template>
<!-- -->
<xsl:template match="E1EDP01">
<xsl:copy>
<xsl:apply-templates select="#*"/>
<xsl:apply-templates select="POSEX">
<xsl:sort select="POSEX" order="descending" data-type="number"/>
</xsl:apply-templates>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
Expected Result
<ORDERS05>
<IDOC BEGIN="1">
<E1EDK14 SEGMENT="1">
<QUALF>014</QUALF>
<ORGID>PF01</ORGID>
</E1EDK14>
<E1EDP01 SEGMENT="1">
<POSEX>00030</POSEX>
<ACTION>001</ACTION>
<PSTYP>1</PSTYP>
<MENGE>140.000</MENGE>
<MENEE>AD</MENEE>
<E1EDP19>
<Text> Test 1 </Text>
</E1EDP19>
</E1EDP01>
<E1EDP01 SEGMENT="1">
<POSEX>00020</POSEX>
<ACTION>001</ACTION>
<PSTYP>0</PSTYP>
<MENGE>540.000</MENGE>
<MENEE>RO</MENEE>
<E1EDP19>
<Text> Test 2 </Text>
</E1EDP19>
</E1EDP01>
<E1EDS01 SEGMENT="1">
<SUMID>002</SUMID>
<SUMME>832.2</SUMME>
<SUNIT>USD</SUNIT>
</E1EDS01>
</IDOC>
</ORDERS05>

Answer 1

If you want to sort the E1EDP01 elements then by using xsl:sort in an xsl:apply-templates of a template processing the children of the parent element:
<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">
<xsl:strip-space elements="*"/>
<xsl:output indent="yes"/>
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="*[E1EDP01]">
<xsl:copy>
<xsl:apply-templates select="#*"/>
<xsl:for-each-group select="node()" group-adjacent="boolean(self::E1EDP01)">
<xsl:choose>
<xsl:when test="current-grouping-key()">
<xsl:apply-templates select="current-group()">
<xsl:sort select="POSEX" order="descending"/>
<xsl:sort select="ACTION" order="descending"/>
</xsl:apply-templates>
</xsl:when>
<xsl:otherwise>
<xsl:apply-templates select="current-group()"/>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each-group>
</xsl:copy>
</xsl:template>
</xsl:transform>
http://xsltransform.net/ncntCT9/1 has an online example.