Index: MsgDefs.h
===================================================================
diff -u -r6878daf001fc7b7429dbf8f7133f0e3cb436af75 -rabc61f3b4986c055d50fe70aad2776be47f29f6d
--- MsgDefs.h	(.../MsgDefs.h)	(revision 6878daf001fc7b7429dbf8f7133f0e3cb436af75)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision abc61f3b4986c055d50fe70aad2776be47f29f6d)
@@ -563,7 +563,7 @@
     REQUEST_REJECT_REASON_PARAM_OUT_OF_RANGE = 17,                      ///< A treatment parameter is out of range
     REQUEST_REJECT_REASON_HEPARIN_PRESTOP_EXCEEDS_DURATION = 18,        ///< The Heparin pre-stop setting is greater than the treatment duration
     REQUEST_REJECT_REASON_DG_FILTER_FLUSH_HAS_BEEN_EXPIRED = 19,        ///< DG filter flush time has been expired
-    REQUEST_REJECT_REASON_AVAILABLE_2 = 20,                             ///< Not used
+    REQUEST_REJECT_REASON_SALINE_BOLUS_NOT_ALLOWED = 20,                ///< Saline bolus is not allowed (due to blood and dialysate recirculation blockage)
     REQUEST_REJECT_REASON_AVAILABLE_3 = 21,                             ///< Not used
     REQUEST_REJECT_REASON_SALINE_BOLUS_NOT_IN_PROGRESS = 22,            ///< A saline bolus is not in progress
     REQUEST_REJECT_REASON_ACTION_DISABLED_IN_CURRENT_STATE = 23,        ///< Requested user action is disabled in current state