Support feedback: IDEA is reporting that "Converter with such already exists in file face-config.xml". It's a custom converter that overrides the default MyFaces java.util.Date converter. Adding a converter-id tag works but then I get runtime errors. Here is the xml snippet: Yes, it is true that it exists already in the faces-config.xml file that is included with myfaces-all.jar but I should be able to override it. Thanks.