OAGIS schema validation

We have extended syncCatalog from OAGIS 9.2. However, when I use pub.schema:validate I get the following error for each of the XML nodes.
[ISC.0082.9003] Unable to locate a matching element declaration

Please let me know how you would do schema validation if you are using OAGIS XSD.

Thanks

What level of webSvcs fix are you at? What version of IS is this?

Cheers,
Akshith

We are on IS 6.5 SP2