Index: MsgDefs.h
===================================================================
diff -u -r6a21d045e72faa8a55ee2852d822a3cd21bfdebb -rb0da744df8e29c114731107d90faec5bbd606dec
--- MsgDefs.h	(.../MsgDefs.h)	(revision 6a21d045e72faa8a55ee2852d822a3cd21bfdebb)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision b0da744df8e29c114731107d90faec5bbd606dec)
@@ -556,7 +556,7 @@
     REQUEST_REJECT_REASON_SALINE_BOLUS_IN_PROGRESS = 16,                ///< A saline bolus is in progress
     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_AVAILABLE_1 = 19,                             ///< Not used
+    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_MAX_VOLUME_REACHED = 21,               ///< Saline bolus volume maximum has been reached - no more saline allowed
     REQUEST_REJECT_REASON_SALINE_BOLUS_NOT_IN_PROGRESS = 22,            ///< A saline bolus is not in progress