Its a different version of the source but here is the message:
The think about JBoss logging is that it uses a few variables to end up with the message id it prints out - I have been bitten by that before so usually I would just search for the numeric part of the string, in your case 20016.
Hope that helps you to debug this further,
You will need a <security> or credentials for the recovery plugin. IronJacamar can't guess, hence the WARN And yes, you need to look in the IronJacamar XSD - not the one for the standard.
I've returned to this problem after some 2 years :-)
After debugging Ironjacamar, I found out that the following configuration means that recovery works:
Lines 22-31 seem to be very important, not just line 6 as I had assumed.