Extraire le maximum d'une valeur alphanumérique en XSLT

Bonjour,
J'essaie de sélectionner la valeur maximale d'un nœud avec xslt mais cela ne fonctionne pas. Le nœud est zordaSupplierCode, c'est un alphanumérique et il semble que les fonctions max ne fonctionnent pas avec alphanumérique. J'ai également essayé de trier mais je n'ai pas de sortie avec le xslt que j'ai utilisé.
Existe-t-il un moyen de sélectionner la valeur maximale de alphanumérique dans XSLT? Ici, ma plus grande valeur devrait être R837.

Existe-il un moyen détourner sinon ?

Merci d'avance.
Voici mon xslt

Code:

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<?xml version="1.0" encoding="UTF-8"?>
 
<!--Changelog :
0.1.0 @SJA : Initial verision
-->
 
<xsl:stylesheet version="2.0"
	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema">
 
<xsl:param name="country" select="pt"/>
<xsl:param name="IsPrimaryOne" select="1"/>
<xsl:param name="IsPrimaryTwo" select="0"/>
 
 
<xsl:output method="text" encoding="UTF-8"/>
 
	<xsl:template match="/">
 
		<xsl:for-each select="root/object/data/additionalTradeItemIdentification/additionalTradeItemIdentificationTypeCode">
		<xsl:if test="contains(.,'GTIN_')">
 
			<ProductCode><xsl:value-of select="../../zordaDedicatedInformation/cug"/></ProductCode>
			<Delimited>;</Delimited>
			<xsl:choose>
				<xsl:when test="../../zordaDedicatedInformation/zordaSupplyChain/variant/isMainSupplyChain/text()='true'">
					<SupplierCode><xsl:value-of select="../../zordaDedicatedInformation/zordaSupplyChain/zordaSupplierCode"/></SupplierCode>
				</xsl:when>
				<xsl:otherwise>
					<SupplierCode><xsl:value-of select="max(../../zordaDedicatedInformation/zordaSupplyChain/zordaSupplierCode)"/></SupplierCode>
				</xsl:otherwise>
			</xsl:choose>
			<Delimited>;</Delimited>
			<EanCode><xsl:value-of select="../additionalTradeItemIdentificationValue"/></EanCode>
			<Delimited>;</Delimited>
			<xsl:choose>
				<xsl:when test="../../zordaDedicatedInformation/isMainGtin/text()='true'">
					<IsPrimary><xsl:value-of select="$IsPrimaryOne"/></IsPrimary>
				</xsl:when>
				<xsl:otherwise>
					<IsPrimary><xsl:value-of select="$IsPrimaryTwo"/></IsPrimary>
				</xsl:otherwise>
			</xsl:choose>
			<xsl:if test="position() != last()"><xsl:text>
</xsl:text></xsl:if>		
		</xsl:if>			
		</xsl:for-each>
	</xsl:template>
</xsl:stylesheet>

Et mon XML

Code:

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<?xml version="1.0" encoding="UTF-8"?>
<root>
  <object>
    <metadata>
      <schemaVersion>5</schemaVersion>
      <offset>415628</offset>
      <processId>53e7baec-c73f-46d6-874f-62433bf2fbc6</processId>
      <processDate>2020-11-25T01:50:39.997Z</processDate>
      <processApp>siriusPRT-uat</processApp>
      <version>1</version>
      <technicalId>05605578001906_PT_PT502410949</technicalId>
      <status>INTEGRATED</status>
      <group>pt</group>
    </metadata>
    <data>
      <tradeItemUnitDescriptorCode>BASE_UNIT_OR_EACH</tradeItemUnitDescriptorCode>
      <gtin>05605578001906</gtin>
      <additionalTradeItemIdentification>
        <additionalTradeItemIdentificationTypeCode>CUG</additionalTradeItemIdentificationTypeCode>
        <additionalTradeItemIdentificationValue>00141592</additionalTradeItemIdentificationValue>
      </additionalTradeItemIdentification>
      <additionalTradeItemIdentification>
        <additionalTradeItemIdentificationTypeCode>GTIN_12</additionalTradeItemIdentificationTypeCode>
        <additionalTradeItemIdentificationValue>560557800190</additionalTradeItemIdentificationValue>
      </additionalTradeItemIdentification>
      <additionalTradeItemIdentification>
        <additionalTradeItemIdentificationTypeCode>PLU</additionalTradeItemIdentificationTypeCode>
        <additionalTradeItemIdentificationValue>2880260000000</additionalTradeItemIdentificationValue>
      </additionalTradeItemIdentification>
      <zordaDedicatedInformation>
        <tradeItemStatus>A</tradeItemStatus>
        <zordaSupplyChain>
          <variant>
            <isMainSupplyChain>false</isMainSupplyChain>
          </variant>
          <zordaSupplierCode>R837</zordaSupplierCode>
          <zordaSupplierCode>P837</zordaSupplierCode>
          <zordaSupplierCode>B837</zordaSupplierCode>
        </zordaSupplyChain>
        <mainGtin>56035500010678</mainGtin>
        <cug>00141592</cug>
        <isMainGtin>true</isMainGtin>
        <countryOfRecordCountryCode>PT</countryOfRecordCountryCode>
        <zordaClassification>
          <groupingCode>PT</groupingCode>
          <code>05</code>
          <hierarchyType>Product</hierarchyType>
          <level>1</level>
          <variantCode>PT</variantCode>
          <hierarchyCode>REF</hierarchyCode>
          <concatenatedCode>05</concatenatedCode>
          <description>
            <pt>PF</pt>
          </description>
          <applicationDate>1996-10-15T00:00:00+02:00</applicationDate>
        </zordaClassification>
        <zordaClassification>
          <groupingCode>PT</groupingCode>
          <code>0508</code>
          <hierarchyType>Product</hierarchyType>
          <level>2</level>
          <variantCode>PT</variantCode>
          <hierarchyCode>REF</hierarchyCode>
          <concatenatedCode>050508</concatenatedCode>
          <description>
            <pt>FRUTAS E VERDURAS</pt>
          </description>
          <applicationDate>1996-10-15T00:00:00+02:00</applicationDate>
        </zordaClassification>
        <zordaClassification>
          <groupingCode>PT</groupingCode>
          <code>050810</code>
          <hierarchyType>Product</hierarchyType>
          <level>3</level>
          <variantCode>PT</variantCode>
          <hierarchyCode>REF</hierarchyCode>
          <concatenatedCode>050508050810</concatenatedCode>
          <description>
            <pt>CASTANHAS</pt>
          </description>
          <applicationDate>1996-10-15T00:00:00+02:00</applicationDate>
        </zordaClassification>
        <zordaClassification>
          <groupingCode>PT</groupingCode>
          <code>05081001</code>
          <hierarchyType>Product</hierarchyType>
          <level>4</level>
          <variantCode>PT</variantCode>
          <hierarchyCode>REF</hierarchyCode>
          <concatenatedCode>05050805081005081001</concatenatedCode>
          <description>
            <pt>CASTANHAS</pt>
          </description>
          <applicationDate>1996-10-15T00:00:00+02:00</applicationDate>
        </zordaClassification>
        <isMainSupplier>false</isMainSupplier>
        <companyInternalIdentification>PT502410949</companyInternalIdentification>
        <isTradeItemAuchanBrand>false</isTradeItemAuchanBrand>
      </zordaDedicatedInformation>
      <isTradeItemAService>false</isTradeItemAService>
      <tradeItemSynchronisationDates>
        <effectiveDateTime>1996-10-15T00:00:00+02:00</effectiveDateTime>
        <discontinuedDateTime>2100-12-31T00:00:00+02:00</discontinuedDateTime>
        <lastChangeDateTime>2020-11-24T23:26:28+02:00</lastChangeDateTime>
      </tradeItemSynchronisationDates>
      <isTradeItemABaseUnit>true</isTradeItemABaseUnit>
      <isTradeItemADespatchUnit>false</isTradeItemADespatchUnit>
      <isTradeItemAConsumerUnit>true</isTradeItemAConsumerUnit>
      <tradeItemInformation>
        <extension>
          <variableTradeItemInformationModule>
            <variableTradeItemInformation>
              <variableTradeItemTypeCode>LOOSE</variableTradeItemTypeCode>
              <isTradeItemAVariableUnit>false</isTradeItemAVariableUnit>
            </variableTradeItemInformation>
          </variableTradeItemInformationModule>
          <deliveryPurchasingInformationModule>
            <deliveryPurchasingInformation>
              <endAvailabilityDateTime>2100-12-31T00:00:00+02:00</endAvailabilityDateTime>
              <orderingUnitOfMeasure>MM</orderingUnitOfMeasure>
            </deliveryPurchasingInformation>
          </deliveryPurchasingInformationModule>
          <dutyFeeTaxInformationModule>
            <dutyFeeTaxInformation>
              <dutyFeeTaxTypeCode>01</dutyFeeTaxTypeCode>
            </dutyFeeTaxInformation>
          </dutyFeeTaxInformationModule>
          <tradeItemMeasurementsModule>
            <tradeItemMeasurements>
              <tradeItemWeight>
                <grossWeight>
                  <measurementValue>0.001</measurementValue>
                  <measurementUnitCode>KGM</measurementUnitCode>
                </grossWeight>
                <netWeight>
                  <measurementValue>1.0E-6</measurementValue>
                  <measurementUnitCode>KGM</measurementUnitCode>
                </netWeight>
                <drainedWeight>
                  <measurementValue>1.0E-6</measurementValue>
                  <measurementUnitCode>KGM</measurementUnitCode>
                </drainedWeight>
              </tradeItemWeight>
              <netContent>
                <measurementValue>0</measurementValue>
                <measurementUnitCode>EA</measurementUnitCode>
              </netContent>
            </tradeItemMeasurements>
          </tradeItemMeasurementsModule>
          <salesInformationModule>
            <salesInformation>
              <priceComparisonMeasurement>
                <measurementValue>1</measurementValue>
                <measurementUnitCode>GRM</measurementUnitCode>
              </priceComparisonMeasurement>
              <sellingUnitOfMeasure>EA</sellingUnitOfMeasure>
            </salesInformation>
          </salesInformationModule>
          <tradeItemDescriptionModule>
            <tradeItemDescriptionInformation>
              <tradeItemDescription>
                <pt>CASTANHA 50/60:1KG </pt>
              </tradeItemDescription>
              <brandNameInformation>null</brandNameInformation>
            </tradeItemDescriptionInformation>
          </tradeItemDescriptionModule>
          <placeOfItemActivityModule>
            <placeOfProductActivity>
              <productActivityDetails>
                <productActivityTypeCode>LAST_PROCESSING</productActivityTypeCode>
              </productActivityDetails>
              <countryOfOriginStatement>
                <pt>Portugal</pt>
              </countryOfOriginStatement>
              <countryOfOrigin>
                <countryCode>620</countryCode>
              </countryOfOrigin>
            </placeOfProductActivity>
          </placeOfItemActivityModule>
          <packagingMarkingModule>
            <packagingMarking>
              <isPriceOnPack>false</isPriceOnPack>
              <hasBatchNumber>false</hasBatchNumber>
            </packagingMarking>
          </packagingMarkingModule>
        </extension>
      </tradeItemInformation>
    </data>
  </object>
</root>