Hi all,

I've got an XSD file that I need to add support to for an optional ID 
attribute on elements. After many hours of tweaking all that I get to 
work in my XML file is:

<Container id="CT"> <!-- Valid ID declaration -->
    <Stuff id="CT-1">Foo Bar</Stuff> <!-- Invalid ID declaration-->
</Container>

I got this to work by adding an:

<xs:attribute name="id" type="xs:ID"/>
just under by <xs:schema ...> line and then:

<xs:complexType name="Container">
     <xs:sequence>
         <xs:element name="Stuff" type="StuffText" minOccurs="0"/>
     </xs:sequence>
     <xs:attribute name="id"/> <!-- I added this line -->
</xs:complexType>

 From what I've read I can do this by declaring the elements separatley 
but the schema is quite large at over 50K, so I'm guessing there MUST be 
a way to globally declare the use of an optional ID attribute on elements.

If I change the elementFromDefault to "unqualified" I can get the ID to 
work but it then breaks other stuff within the XSD.

Can anyone point me in the right direction here please.

Thanks.