There is one @Message annotation in Weld susbsystem in EAP 7.0.0.DR11 which has no ID assigned:
In general, there should not be any such messages.

/jboss-eap-7.0-src/weld/src/main/java/org/jboss/as/weld/logging/WeldLogger.java

    		235:@Message(value = "Discovered %s")

Giving blocker priority as this issue blocks RFE verification.