I found that the error is in lines like this in the schema files: <xs:extension base="StringLength0to128"> If I change the type from StringLength0to128 to xs:string and now it passes the error. The new lines are like this: <xs:extension base="xs:string"> The StringLength0to128 is a type defined by the OTA specification as: <xs:simpleType name="StringLength0to128"> <xs:annotation> <xs:documentation xml:lang="en">Used for Character Strings, length 0 to 128</xs:documentation> </xs:annotation> <xs:restriction base="xs:string"> <xs:minLength value="0"/> <xs:maxLength value="128"/> </xs:restriction> </xs:simpleType> It seems that the wstools doesn't support "xs:extension base" with types defined in the schema but only simple types. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3987499#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...