I tried to create a component that shows only extra errors (because all other errors are shown at the field using a validation decorator). But it's not possible (except using cast and/or reflection) to access it.
Please add something to the ValidationTracker Interface that gives information about where an error belongs to.
List<String> getFieldsWithErrors(); // Returns names of fields which have errors recorded
List<String> getExtraErrors(); // REturns all errors not bound to a field