key attribute in xml

[popprem]

hi,
i created an xml schema with namespace like below.

<xsd:schema
xmlns:xsd="http ://www.w3.org/2001/XMLSchema"
xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace ="http://www.w3.org/2001/XMLSchema" elementFormDefa ult="qualified"
attributeFormDe fault="unqualif ied" >

but when i use key & keyref, it gives this warning :- "The 'http://www.w3.org/2001/XMLSchema:key' element is not supported in this context."

what can be the problem?

Can anyone please reply....
Thanks in advance.

this is how i specified key :

<xsd:key name="PK_Counte rPartyCID" >
<xsd:selector xpath=".//Counter_Party_C ID"/>
<xsd:field xpath="CompID"/>
</xsd:key>

[Dormilich]

just a question, what exactly is the context of your <key> (it's only allowed inside <element>)?

regards

[popprem]

thanks for the consideration.

Can u please give me an example?

[Dormilich]

example of what? one example of the <key> usage is here, others you will find searching google.

regards

[popprem]

thanks a lot
I got it.