I have a project with a 2.5 descriptor that is currently working, but would like to change it to version 3.0. However, when I change the header, Idea does not even recognize the version number, complaining that it has the wrong attribute value. If I change it to 2.5 it does work.
This is the current web-app definition I'm trying to use:
Where it says 'version="3.0"', Intellij complains that this is a "Wrong attribute value".
If I try to Validate the file, I get a bunch of errors like:
sch-props-correct.2: A schema cannot contain two global components with the same name; this schema contains two occurrences of 'http://java.sun.com/xml/ns/javaee,web-app'.
Any idea what is misconfigured?