I'm using Axis2 WSDL2Java, and there appears to be no validate option flag for validating a WSDL before generating the stub. However, my stub generation is failing, and I'm pretty sure it is an issue with a malformed WSDL. The error we get is "can't serialize the policy", which after some research tends to lean toward an invalid WSDL. Are there any tools (preferably an ANT task for a third party API) that will allow me to validate a WSDL according to it's schema so that I can inform the vendor that it is not an issue on my end?