The code that generates this log is from class org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractCreateCommand and more specifically in method protected void performInsert(EntityEnterpriseContext ctx) throws CreateException. Here is the snippet that is logging. ?.. | catch(SQLException e) | { | if(exceptionProcessor != null && exceptionProcessor.isDuplicateKey(e)) | { | log.error("Failed to create instance.", e); | throw new CreateException( | "Integrity constraint violation. Possibly unique key violation or invalid foreign key value." | ); | } | ?. | } log object is org.jboss.logging.Logger instance. The only way that I find is not to log log level ERROR, which is too hard. Or just make feature request this logging to be changed from ERROR to WARN level. I am wondering why this is ERROR? Exception is thrown and it will not be left unnoticed, why explicitly logging is needed? If this is because throw new CreateException(??"); hides the original message and stack trace, this could be changed, too. Is there anyone with good explanation? Best Regards, jivkoto View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3977896#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...