I was expecting the XML elements something in this order:

<?xml version="1.0" encoding="utf-8"?>
<MessageHeader>

<AgreementId>urn:xxx-xxx:::</AgreementId>
<ConversationId>20050904-13:30:03.469-8572</ConversationId>

<Sequence>
<Id>What id is this?</Id>
<Number>123</Number>
<Total>6</Total>
</Sequence>

<Service>
<type>service.type. what servicetype is this?</type>
</Service>

<Action>Problem Submit</Action>

<MessageData>
<MessageId>20050904-13:30:03.469-8572@...</MessageId>
<Timestamp>2005-0409T12:10:42</Timestamp>
<RefToMessageId>Which reference is this?</RefToMessageId>
<TimeToLive>2005-0409T12:10:42</TimeToLive>
</MessageData>

<Description>This is the message header</Description>

<ErrorList>
<Error>
<Description> Error Description</Description>
<codeContent>code content</codeContent>
<errorCode>Error Code</errorCode>
<severity>severity.type</severity>
<location>error location</location>
</Error>
<highestSeverity>severity.type</highestSeverity>
</ErrorList>

<id>which id is this?</id>
</MessageHeader>
[download]

But the generated SOAP envelope comes out as below:

<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<GetbyName xmlns="urn:Delivery">
<MessageHeader xmlns="urn:MsgHeader">

<MessageData>
<Timestamp>2005-04-08T14:29:37</Timestamp>
<RefToMessageId>Which reference is this</RefToMessageId>
<TimeToLive>2005-04-08T14:29:37</TimeToLive>
<MessageId>20050904-13:30:03.469-8572@...</MessageId>
</MessageData>

<ErrorList>
<Error>
<location>error location</location>
<errorCode>Error Code</errorCode>
<codeContent>code content</codeContent>
<severity>severity.type</severity>
<Description>Error Description</Description>
</Error>
</ErrorList>

<Service>
<type>service.type. What servicetype is this?</type>
</Service>
<highestSeverity>severity.type</highestSeverity>
<AgreementId>urn:xxx-xxxx:::</AgreementId>
<Action>Problem Submittal</Action>
<id>Which id is this</id>

<Sequence>
<Total>6</Total>
<Number>123</Number>
<Id>What id is this</Id>
</Sequence>

</MessageHeader>
</GetbyName>
</soap:Body>
</soap:Envelope>
[download]

How do I preserve the order of XML elements in the generated SOAP envelope (both on client/server side). like

<MessageHeader>
<AgreementId>...
<ConversationId>...

<Sequence>
<Id>...
<Number> ...
[download]

Many thanks