I have an XML that has more than one schema (it is a SOAP message in my case). I want to validate all the schemas.

I tried to validate only one schema but it fails as the other schema doesn't match.

Here is the XML:
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope"
xmlns:m="http://www.example.org/timeouts"
xmlns:xml="http://www.w3.org/XML/1998/namespace">
<env:Body>
<env:Fault>
<env:Code>
<env:Value>env:Sender</env:Value>
<env:Subcode>
<env:Value>m:MessageTimeout</env:Value>
</env:Subcode>
</env:Code>
<env:Reason>
<env:Text xml:lang="en">Sender Timeout</env:Text>
</env:Reason>
<env:Detail>
<m:MaxTime>P5M</m:MaxTime>
</env:Detail>
</env:Fault>
</env:Body>
</env:Envelope>

When validating the SOAP schema, it fails because of the xml:lang.

How can I validate all the schemas?

Thanks