<span style='font-size:10.0pt;
font-family:Arial'>Hi,<o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p>

<span style='font-size:10.0pt;
font-family:Arial'>I would like to create an XML Schema for the content model
like:<o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p>

<span style='font-size:10.0pt;
font-family:Arial'><M><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>  <type>type1</type><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>  <… several elements specific to type1 …><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'></M><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p>

<span style='font-size:10.0pt;
font-family:Arial'><M><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>  <type>type2</type><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>  <… several elements specific to type2 …><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'></M><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p>

<span style='font-size:10.0pt;
font-family:Arial'>Etc<o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p>

<span style='font-size:10.0pt;
font-family:Arial'>I was playing with a XML Schema like:<o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p>

<span style='font-size:10.0pt;
font-family:Arial'>  <xs:complexType name="upa_test"><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>    <xs:choice><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>      <xs:sequence><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>        <xs:element
name="type" type="xs:string" fixed="type1" /><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>        <xs:element
name="B" type="xs:string"/><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>      </xs:sequence><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>      <xs:sequence><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>        <xs:element
name="type" type="xs:string" fixed="type2" /><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>        <xs:element
name="C" type="xs:string"/><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>      </xs:sequence><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>    </xs:choice><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>  </xs:complexType><o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p>

<span style='font-size:10.0pt;
font-family:Arial'>But the processor I am using rejects this Schema saying it
violates the UPA rule. Shouldn’t the processor be able to uniquely
determine the particle based on the element’s type and/or value? Can
someone suggest an alternate XML Schema that would not violate the UPA rule?<o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p>

<span style='font-size:10.0pt;
font-family:Arial'>Changing the content model to introduce an intermediate
level for <type1>, <type2>, etc would work, but I can’t make this
change as it would break backward compatibility.<o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p>

<span style='font-size:10.0pt;
font-family:Arial'>Thanks<o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'>Azariah<o:p></o:p>

<span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p>