xsd error in the following -

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here xml

     <?xml version="1.0" encoding="utf-8"?>     <modules xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:nonamespaceschemalocation="xsdqu3.xsd">         <module code="cse1246">             <name shortname="adsa">applied data structures , algorithms</name>             <level>1</level>             <resourceperson>                 <name>anwar</name>                 <surname>chutoo</surname>             </resourceperson>         </module>     <module code="cse2041">     <name shortname="web 2">web technologies ii</name>         <level>2</level>         <resourceperson>             <fullname>shehzad jaunbuccus</fullname>         </resourceperson>     </module>  </modules>

i'm having error @ name. resource person can either contain fullname or name , surname. please help. correctly doing part

here xsd

<?xml version="1.0" encoding="utf-8"?> <xs:schema elementformdefault="qualified" xmlns:xs="http://www.w3.org/2001/xmlschema">      <xs:complextype name="namensurnametype">         <xs:sequence>           <xs:element name="name" type="xs:string"/>           <xs:element name="surname" type="xs:string"/>         </xs:sequence>     </xs:complextype>      <xs:complextype name="resourcepersontype">         <xs:sequence>             <xs:choice>                 <xs:element name="namensurnametype" type="namensurnametype"/>                 <xs:element name="fullname" type="xs:string"/>             </xs:choice>         </xs:sequence>     </xs:complextype>      <xs:attribute name="code">         <xs:simpletype>             <xs:restriction base="xs:id">                 <xs:pattern value="cse(\d{4})"/>             </xs:restriction>         </xs:simpletype>     </xs:attribute>      <xs:complextype name="nametype">         <xs:simplecontent>             <xs:extension base="xs:string">                 <xs:attribute name="shortname" type="xs:string"/>             </xs:extension>         </xs:simplecontent>     </xs:complextype>      <xs:element name="modules">     <xs:complextype>         <xs:sequence>             <xs:element name="module" minoccurs="1" maxoccurs="unbounded">                 <xs:complextype>                     <xs:sequence>                         <xs:element name="name" type="nametype"/>                         <xs:element name="level" type="xs:positiveinteger"/>                         <xs:element name="resourceperson" type="resourcepersontype"/>                      </xs:sequence>                     <xs:attribute ref="code" use="required"/>                 </xs:complextype>             </xs:element>         </xs:sequence>     </xs:complextype>     </xs:element>   </xs:schema>

i can see confusion; choice "option" can particle; compositor (such xs:sequence or xs:choice) match description. minimum need change following definition. 

<xs:complextype name="resourcepersontype">     <xs:sequence>         <xs:choice>             <xs:sequence>                 <xs:element name="name" type="xs:string"/>                 <xs:element name="surname" type="xs:string"/>             </xs:sequence>             <xs:element name="fullname" type="xs:string"/>         </xs:choice>     </xs:sequence> </xs:complextype>

if want reference name seem want global complex type, 1 can create group , reference instead. below modified xsd consistent above scenario:

<?xml version="1.0" encoding="utf-8" ?> <!-- xml schema generated qtassistant/xsd module (http://www.paschidev.com) --> <xs:schema elementformdefault="qualified" xmlns:xs="http://www.w3.org/2001/xmlschema">      <xs:group name="namensurnametype">         <xs:sequence>             <xs:element name="name" type="xs:string"/>             <xs:element name="surname" type="xs:string"/>         </xs:sequence>     </xs:group>      <xs:complextype name="resourcepersontype">         <xs:sequence>             <xs:choice>                 <xs:group ref="namensurnametype"/>                 <xs:element name="fullname" type="xs:string"/>             </xs:choice>         </xs:sequence>     </xs:complextype>      <xs:attribute name="code">         <xs:simpletype>             <xs:restriction base="xs:id">                 <xs:pattern value="cse(\d{4})"/>             </xs:restriction>         </xs:simpletype>     </xs:attribute>      <xs:complextype name="nametype">         <xs:simplecontent>             <xs:extension base="xs:string">                 <xs:attribute name="shortname" type="xs:string"/>             </xs:extension>         </xs:simplecontent>     </xs:complextype>      <xs:element name="modules">         <xs:complextype>             <xs:sequence>                 <xs:element name="module" minoccurs="1" maxoccurs="unbounded">                     <xs:complextype>                         <xs:sequence>                             <xs:element name="name" type="nametype"/>                             <xs:element name="level" type="xs:positiveinteger"/>                             <xs:element name="resourceperson" type="resourcepersontype"/>                          </xs:sequence>                         <xs:attribute ref="code" use="required"/>                     </xs:complextype>                 </xs:element>             </xs:sequence>         </xs:complextype>     </xs:element> </xs:schema>

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