SalesOrderIdentifier 

<Documentation>
  <Description>Unique or provided number or code to identify a sales order in the systems of partners.</Description>
</Documentation>

Element Information

Model

DocumentReference
Children: DocumentReference

Source 

<xsd:element name="SalesOrderIdentifier" type="SalesOrderIdentifierType">
  <xsd:annotation>
    <xsd:documentation>
      <Documentation>
        <Description>Unique or provided number or code to identify a sales order in the systems of partners.</Description>
      </Documentation>
    </xsd:documentation>
  </xsd:annotation>
</xsd:element>

Sample