I am working in a DataPower environment and currently when an XML request is validated against an XSD and it fails, we have no way of reporting back to the client what the error was (in the reply that is). Do you know of any way to do this?

Brian

Thanks for posting the suggestion to use the XSLT script. 

I have tried it and I have found that var://service/error-message does not actually contain the XSD validation error.

For instance, in my test, the log shows the following error:

xmlfirewall (XXXX): Schema Validation Error
xmlfirewall (XXXX): Execution of 'local:///XXXX.xsd' aborted: http://dynamic:80/XXXXX: cvc-particle 2.1: in element {http://www.XXXX}Foo with anonymous type, found <wms:FooBar> (in namespace http://www.XXXX), but next item should be {http://www.XXXX}Bar

But when I go in the probe and I check the context information right after the validation, the var://service/error-message contains

'<?xml version="1.0" encoding="UTF-8"?> <env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/"><env:Body><env:Fault><faultcode>env:Client</faultcode><faultstring>Internal Error (from client)</faultstring></env:Fault></env:Body></env:Envelope>'

I think that in order to capture the error, we may need to use the schema-validate extension function.  The documentation does not make it clear that it should return the error, but it's worth a try...  The documentation says that the function returns the validated node-set but it's possible that in case of failure it would return the error...  I haven't tried that though.

We are experiencing the same error and don’t know what it means. Can you please tell us what was wrong and how you fixed it. At least get us going in the right direction. Any help with this will be greatly appreciated.