Adding missing nodes to XML via XSLT - xslt

Question

I'm using a tool to import XML files into Dynamics NAV, but some parties providing the XML files skip empty nodes. My tool (external) can not handle those situation so I want to include XSLT to add the missing nodes. The xslt works fine for 1 node, but adding multiple nodes does not work. So I must be doing something wrong.
I'm building an integration to Dynamics NAV to insert Sales Orders. The orders are delivered from multiple parties using a XML file. However some of the parties providing the XML do not list all nodes in their XML file, they skip the empty ones. I'm using a tool build within Dynamics NAV (Add-on from other vendor) to import those files. However some XML files go wrong because of the fact that some (empty) nodes are missing in the XML file. I know this is an issue within the add-on but I need a solution on short notice. So created an XSLT to add the missing nodes. It works fine with 1 missing node, but it is not able to add both missing nodes. I'm not that familiar with XSLT so most of the times it is trial & error. Perhaps someone can help me with this.
This is the XML file format that is provided, The nodes that are sometimes missing is the DeliveryParty node and the DeliveryAddress part.
<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<Orders>
<Order>
<Partner>
<SenderEANCode>9999999999999</SenderEANCode>
<RecipientEANCode>9999999999999</RecipientEANCode>
</Partner>
<OrderHeader>
<OrderVersion>008</OrderVersion>
<OrderTypeCode>220</OrderTypeCode>
<Document>
<DocumentNumber>34034040</DocumentNumber>
<Date>2019-04-18</Date>
</Document>
<DeliveryDate>2019-04-24</DeliveryDate>
<CompleteDelivery>YES</CompleteDelivery>
<Supplier>9999999999999</Supplier>
<Buyer>9999999999999</Buyer>
<Invoicee>9999999999999</Invoicee>
<DeliveryParty>9999999999999</DeliveryParty>
<DeliveryAddress>
<DeliveryName>Private Customer</DeliveryName>
<DeliveryStreet>Teststraat</DeliveryStreet>
<DeliveryCity>TestCity</DeliveryCity>
<DeliveryCountry>NL</DeliveryCountry>
<DeliveryTelNo></DeliveryTelNo>
<DeliveryEmail>test#test.com</DeliveryEmail>
</DeliveryAddress>
</OrderHeader>
<OrderLine>
<LineItemNumber>1</LineItemNumber>
<GTIN>9999999999999</GTIN>
<OrderedQuantity>
<Quantity>260</Quantity>
</OrderedQuantity>
</OrderLine>
</Order>
</Orders>
Sometimes the DeliveryParty node is missing and other times the DeliveryAddress part including subnodes is missing. I created the following XSLT to add those nodes but as it is trail and error I need some help to fix this. I'm a novice to XSLT, I can so some small changes but I do not use it frequently so knowledge is fading away quickly.
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="Orders/Order/OrderHeader[not(DeliveryParty)]">
<xsl:copy-of select="*"/>
<DeliveryParty/>
</xsl:template>
<xsl:template match="Orders/Order/OrderHeader[not(//DeliveryAddress)]">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
<DeliveryAddress>
<DeliveryName></DeliveryName>
<DeliveryStreet></DeliveryStreet>
<DeliveryPostalCode></DeliveryPostalCode>
<DeliveryCity></DeliveryCity>
<DeliveryCountry></DeliveryCountry>
<DeliveryTelNo></DeliveryTelNo>
<DeliveryEmail></DeliveryEmail>
</DeliveryAddress>
</xsl:copy>
</xsl:template>
With above mentioned XSLT the DeliveryAddress node with it's subnodes is added but the deliveryparty is not.
When the file is delivered like this:
<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<Orders>
<Order>
<Partner>
<SenderEANCode>9999999999999</SenderEANCode>
<RecipientEANCode>9999999999999</RecipientEANCode>
</Partner>
<OrderHeader>
<OrderVersion>008</OrderVersion>
<OrderTypeCode>220</OrderTypeCode>
<Document>
<DocumentNumber>34034040</DocumentNumber>
<Date>2019-04-18</Date>
</Document>
<DeliveryDate>2019-04-24</DeliveryDate>
<CompleteDelivery>YES</CompleteDelivery>
<Supplier>9999999999999</Supplier>
<Buyer>9999999999999</Buyer>
<Invoicee>9999999999999</Invoicee>
</OrderHeader>
<OrderLine>
<LineItemNumber>1</LineItemNumber>
<GTIN>9999999999999</GTIN>
<OrderedQuantity>
<Quantity>260</Quantity>
</OrderedQuantity>
</OrderLine>
</Order>
</Orders>
The outcome should be this:
<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<Orders>
<Order>
<Partner>
<SenderEANCode>9999999999999</SenderEANCode>
<RecipientEANCode>9999999999999</RecipientEANCode>
</Partner>
<OrderHeader>
<OrderVersion>008</OrderVersion>
<OrderTypeCode>220</OrderTypeCode>
<Document>
<DocumentNumber>34034040</DocumentNumber>
<Date>2019-04-18</Date>
</Document>
<DeliveryDate>2019-04-24</DeliveryDate>
<CompleteDelivery>YES</CompleteDelivery>
<Supplier>9999999999999</Supplier>
<Buyer>9999999999999</Buyer>
<Invoicee>9999999999999</Invoicee>
<DeliveryParty></DeliveryParty>
<DeliveryAddress>
<DeliveryName></DeliveryName>
<DeliveryStreet></DeliveryStreet>
<DeliveryCity></DeliveryCity>
<DeliveryCountry></DeliveryCountry>
<DeliveryTelNo></DeliveryTelNo>
<DeliveryEmail></DeliveryEmail>
</DeliveryAddress>
</OrderHeader>
<OrderLine>
<LineItemNumber>1</LineItemNumber>
<GTIN>9999999999999</GTIN>
<OrderedQuantity>
<Quantity>260</Quantity>
</OrderedQuantity>
</OrderLine>
</Order>
</Orders>

Answer 1

How about:
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="OrderHeader">
<xsl:copy>
<xsl:apply-templates/>
<xsl:if test="not(DeliveryParty)">
<DeliveryParty/>
</xsl:if>
<xsl:if test="not(DeliveryAddress)">
<DeliveryAddress>
<DeliveryName/>
<DeliveryStreet/>
<DeliveryPostalCode/>
<DeliveryCity/>
<DeliveryCountry/>
<DeliveryTelNo/>
<DeliveryEmail/>
</DeliveryAddress>
</xsl:if>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>