Want to sum the key quantities of each line recursively in XSLT - xslt-1.0

Question

I have done few calculations using key-match for each line and i am expecting to sum the total of these values at the last row.
Below is the calculation.
LINE#1
4 (DispatchQuantity = 2; occurrence = 2 -> 2 x 2 = 4) MID-LAYER 12 (UnitNetWeight = 3KG x 12)
4 (DispatchQuantity = 2; occurrence = 2 -> 2 x 2 = 4) PALLET-LAYER 12 (UnitNetWeight = 3KG x 12)
LINE#2
8 (DispatchQuantity = 4; occurrence = 2 -> 4 x 2 = 8) MID-LAYER 24 (UnitNetWeight = 3KG x 8)
I need to add the numbers of each line to produce one last block which should contains 16 (4+4+8) and 48(12+12+24)
current o/p:
4 MID-LAYER 12
4 PALLET-LAYER 12
8 MID-LAYER 24
XML:
<?xml version="1.0" encoding="UTF-8"?>
<cXML payloadID="16314uu19eii6-765h52u1pp0.162.97.178" timestamp="2021-10-06T02:54:24-07:00" version="1.2.051" xml:lang="en-PL">
<Header>
<Line>
<Items>
<Item>
<Dimension type="unitNetWeight" quantity="3.0"/>
<Code>One</Code>
<CodeIdentifier>MID-LAYER</CodeIdentifier>
<DispatchQuantity quantity="2.0"/>
</Item>
<Item>
<Dimension type="unitNetWeight" quantity="3.0"/>
<Code>auxiliary</Code>
<CodeIdentifier>MID-LAYER</CodeIdentifier>
<DispatchQuantity quantity="2.0"/>
</Item>
<Item>
<Dimension type="unitNetWeight" quantity="3.0"/>
<Code>auxiliary</Code>
<CodeIdentifier>MID-LAYER</CodeIdentifier>
<DispatchQuantity quantity="2.0"/>
</Item>
<Item>
<Dimension type="unitNetWeight" quantity="3.0"/>
<Code>auxiliary</Code>
<CodeIdentifier>PALLET-LAYER</CodeIdentifier>
<DispatchQuantity quantity="2.0"/>
</Item>
<Item>
<Dimension type="unitNetWeight" quantity="3.0"/>
<Code>auxiliary</Code>
<CodeIdentifier>PALLET-LAYER</CodeIdentifier>
<DispatchQuantity quantity="2.0"/>
</Item>
</Items>
<Items>
<Item>
<Dimension type="unitNetWeight" quantity="3.0"/>
<Code>auxiliary</Code>
<CodeIdentifier>MID-LAYER</CodeIdentifier>
<DispatchQuantity quantity="4.0"/>
</Item>
<Item>
<Dimension type="unitNetWeight" quantity="3.0"/>
<Code>auxiliary</Code>
<CodeIdentifier>MID-LAYER</CodeIdentifier>
<DispatchQuantity quantity="4.0"/>
</Item>
</Items>
</Line>
</Header>
</cXML>
Code:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"
xmlns:fo="http://www.w3.org/1999/XSL/Format"
xmlns:date="http://exslt.org/dates-and-times"
extension-element-prefixes="date"
>
<!--unique key-->
<xsl:key name="aux" match="Item[Code='auxiliary']" use="concat(CodeIdentifier, '|', generate-id(..))"/>
<xsl:decimal-format name="generalFormat" grouping-separator="," decimal-separator="." />
<xsl:output method="xml" indent="yes" />
<xsl:template match="/" name="Barcode">
<fo:root>
<fo:layout-master-set>
<fo:simple-page-master master-name="ManufacturLabelSize-first" page-height="297mm" page-width="210mm" margin-top="25.4mm" margin-right="25.4mm" margin-left="25.4mm" margin-bottom="25.4mm">
<fo:region-body margin-top="15mm" />
<fo:region-before />
<fo:region-after />
</fo:simple-page-master>
</fo:layout-master-set>
<fo:page-sequence master-reference="ManufacturLabelSize-first" id="pSeqID">
<fo:flow flow-name="xsl-region-body">
<fo:table>
<fo:table-body border="solid" border-width="0.5pt">
<xsl:for-each select="cXML/Header/Line">
<xsl:for-each select="Items">
<fo:table-row>
<fo:table-cell>
<!--DispatchQuantity*occurence-->
<fo:block>
<xsl:for-each select="Item[Code='auxiliary'][count(. | key('aux', concat(CodeIdentifier, '|', generate-id(..)))[1]) = 1]">
<fo:block >
<xsl:value-of select="(DispatchQuantity/#quantity) * count(key('aux', concat(CodeIdentifier, '|', generate-id(..))))"/>
</fo:block>
</xsl:for-each>
</fo:block>
</fo:table-cell>
<fo:table-cell>
<!--unique code-->
<fo:block>
<xsl:for-each select="Item[Code='auxiliary'][count(. | key('aux', concat(CodeIdentifier, '|', generate-id(..)))[1]) = 1]">
<fo:block >
<xsl:value-of select="CodeIdentifier"/>
</fo:block>
</xsl:for-each>
</fo:block>
</fo:table-cell>
<fo:table-cell>
<!--(DispatchQuantity*occurence)*UnitNetWeight-->
<fo:block>
<xsl:for-each select="Item[Code='auxiliary'][count(. | key('aux', concat(CodeIdentifier, '|', generate-id(..)))[1]) = 1]">
<fo:block font-size="8" font-family="Calibri" padding-before="2mm" start-indent="0.75mm">
<xsl:value-of select="(DispatchQuantity/#quantity) * count(key('aux', concat(CodeIdentifier, '|', generate-id(..)))) * Dimension[#type='unitNetWeight']/#quantity"/>
</fo:block>
</xsl:for-each>
</fo:block>
</fo:table-cell>
</fo:table-row>
</xsl:for-each>
</xsl:for-each>
</fo:table-body>
</fo:table>
</fo:flow>
</fo:page-sequence>
</fo:root>
</xsl:template>
</xsl:stylesheet>
Your kind help is much valued!

Answer 1

Consider this simplified example:
XSLT 1.0 (+EXSLT node-set() function)
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:exsl="http://exslt.org/common"
extension-element-prefixes="exsl">
<xsl:output method="text" encoding="UTF-8"/>
<xsl:key name="aux" match="Item[Code='auxiliary']" use="concat(CodeIdentifier, '|', generate-id(..))"/>
<xsl:template match="cXML">
<xsl:variable name="groups-RTF">
<xsl:for-each select="//Item[Code='auxiliary'][count(. | key('aux', concat(CodeIdentifier, '|', generate-id(..)))[1]) = 1]">
<group code="{CodeIdentifier}">
<xsl:variable name="group-size" select="count(key('aux', concat(CodeIdentifier, '|', generate-id(..))))"/>
<xsl:variable name="quantity" select="DispatchQuantity/#quantity * $group-size"/>
<quantity>
<xsl:value-of select="$quantity"/>
</quantity>
<weight>
<xsl:value-of select="Dimension[#type='unitNetWeight']/#quantity * $quantity"/>
</weight>
</group>
</xsl:for-each>
</xsl:variable>
<xsl:variable name="groups" select="exsl:node-set($groups-RTF)/group" />
<!-- output -->
<xsl:text>code, quantity, weight
</xsl:text>
<xsl:for-each select="$groups">
<xsl:value-of select="#code"/>
<xsl:text>, </xsl:text>
<xsl:value-of select="quantity"/>
<xsl:text>, </xsl:text>
<xsl:value-of select="weight"/>
<xsl:text>
</xsl:text>
</xsl:for-each>
<xsl:text>TOTAL, </xsl:text>
<xsl:value-of select="sum($groups/quantity)"/>
<xsl:text>, </xsl:text>
<xsl:value-of select="sum($groups/weight)"/>
</xsl:template>
</xsl:stylesheet>
Result
code, quantity, weight
MID-LAYER, 4, 12
PALLET-LAYER, 4, 12
MID-LAYER, 8, 24
TOTAL, 16, 48