Look for the "com.arjuna.ats.jta.allowMultipleLastResources" at: https://community.jboss.org/wiki/Multiple1PC
(I'm not sure but i think it is availabale in JBoss 4.2.3)
And when you do please read why you should care why this message are being logged
Another "solution" would be to filter it out in the logging setup...
Opps... I guess you alread have found that flag...
The warning you have cannot be removed soo you have to tweak the logging setup to ignore it. (Look for the Log4j RegexFilter for an example)
(And you still should fix it!!!)
Not that anyone cares anymore, but this legacy project is now being upgrade to run on JBoss EAP 6.3 and that message has now disappeared. This is very good news because our server log files were littered with this statement; I'm talking about tens of thousands of lines.