using <sequence> under the <choice> tag

[s123]

Hi,
I am using the sequence tag under the choice tag. the code part of this is :
<xs:choice>
<xs:sequence>
<xs:element name="values" type="ValuesType" minOccurs="0" maxOccurs="unbounded"/>
<!-- Adding enum type for enum rules -->
<xs:element name="enum" type="EnumType" minOccurs="0"/>
</xs:sequence>
<xs:sequence>
<xs:element name="enum" type="EnumType" minOccurs="0"/>
<xs:element name="helpURL" type="xs:string" minOccurs="0"/>
</xs:sequence>
</xs:choice>
The error doesn't show when I open the file. It shows when I validate the xsd. This occurs in XML Spy

while validating this xsd i am getting the following error:
Error Message:
Element 'enum' is not consistent with element 'enum'.
Error location: xs:schema / xs:complexType / xs:choice / xs:sequence / xs:element

Is there any other way to write this code.
please respond it will be helpful.

thanks

[jkmyoung]

There is a problem with deciding which branch to choose.

Let's say you have a single enum element.
Do you choose the first sequence or the 2nd?

I think this might work instead:

<xs:choice>
    <xs:sequence>
        <xs:element name="values" type="ValuesType" maxOccurs="unbounded"/>
        <!-- Adding enum type for enum rules -->
        <xs:element name="enum" type="EnumType" minOccurs="0"/>
    </xs:sequence>
    <xs:sequence>
        <xs:element name="enum" type="EnumType"/>
        <xs:element name="helpURL" type="xs:string" minOccurs="0"/>
    </xs:sequence>
    <xs:sequence>
        <xs:element name="helpURL" type="xs:string" minOccurs="0"/>
    </xs:sequence>
</xs:choice>
 

Note where the minOccurs are.

Also if you could post the part of the xml you're trying to validate, it will help as well.