Julien, Bolek says that you are te best addressee for this. This also belongs to my "Improve Eclipse Experience" series ;) This time, the issue has an objective foundation - I mean, the problem is not caused by Eclipse, Eclipse just reports the problem in its Problems view a kind of too offensively so that it is hard to recognize more important problems in the flood of these XSD error markers. Please look at the W3C XML Schema Validator: http://www.w3.org/2001/03/webdata/xsv?docAddrs=http%3A%2F%2Fdocs.jboss.co... <http://www.w3.org/2001/03/webdata/xsv?docAddrs=http%3A%2F%2Fdocs.jboss.co... The problem is 54:13:Invalid per cvc-attribute.1.2 <http://www.w3.org/TR/xmlschema-1/#cvc-attribute>;: attribute type check failed for {None}:ref: xml:lang is qualified by an unimported non-local namespace: http://www.w3.org/XML/1998/namespace Could it please be fixed? One possible sollution is to insert <xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="http://www.w3.org/2001/xml.xsd"/> Just after the opening xs:schema element. Thank you, Peter