[jboss-as7-dev] What does this warning mean? ARJUNA12140: Adding multiple last resources is disallowed. Current resource is com.arjuna.ats.internal.arjuna.abstractrecords.LastResourceRecord at 37f017

[Scott Marlow]

What this warning mean "ARJUNA12140: Adding multiple last resources is 
disallowed. Current resource is 
com.arjuna.ats.internal.arjuna.abstractrecords.LastResourceRecord at 37f017"

The exception that follows is "javax.transaction.SystemException: 
IJ000356: Failed to enlist: java.lang.Throwable: Unabled to enlist 
resource, see the previous warnings. tx=TransactionImple < ac, 
BasicAction: 0:ffffc082df3f:1b3f9691:4ec10467:3602 status: 
ActionStatus.ABORT_ONLY >"

http://pastebin.com/GkRTN4jc contains the full exception call stack.

Does this mean that more than one non-XA datasources were enlisted into 
the transaction?  Or something else?

Scott