Index: DDDefs.h
===================================================================
diff -u -rc7a3b8366d89548f1be6c74fa4657e691e763deb -r8842f7cf3db2811c551af36f3d9577adcbed89e6
--- DDDefs.h	(.../DDDefs.h)	(revision c7a3b8366d89548f1be6c74fa4657e691e763deb)
+++ DDDefs.h	(.../DDDefs.h)	(revision 8842f7cf3db2811c551af36f3d9577adcbed89e6)
@@ -7,8 +7,8 @@
 *
 * @file    DDDefs.h
 *
-* @author  (last)      Santhosh Reddy
-* @date    (last)      06-Jul-2026
+* @author  (last)      Arpita Srivastava
+* @date    (last)      13-Jul-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  01-Aug-2024
@@ -338,7 +338,12 @@
     DD_EVENT_HEATER_STATE_CHANGE,                                       ///< DD heater state change event
     DD_EVENT_DRY_BICART_STATE_CHANGE,                                   ///< DD Dry Bicart State change event
     DD_EVENT_UF_PUMP_ON_OFF,                                            ///< DD UltraFiltration State change event
-    DD_EVENT_LAST = DD_EVENT_UF_PUMP_ON_OFF,                            ///< DD last event in list
+    DD_EVENT_CALIBRATION_RECORD_UPDATE,                                 ///< DD NVM Calibration Record Change Event
+    DD_EVENT_SYSTEM_RECORD_UPDATE,                                      ///< DD NVM System Record Change Event
+    DD_EVENT_SERVICE_RECORD_UPDATE,                                     ///< DD NVM Service Record Change Event
+    DD_EVENT_INSTITUTIONAL_RECORD_UPDATE,                               ///< DD NVM Institutional Record Change Event
+    DD_EVENT_USAGE_INFO_RECORD_UPDATE,                                  ///< DD NVM Usage Info Record Change Event
+    DD_EVENT_LAST = DD_EVENT_USAGE_INFO_RECORD_UPDATE,                  ///< DD last event in list
     FP_EVENT_STARTUP,                                                   ///< FP startup event
     FP_EVENT_FIRST = FP_EVENT_STARTUP,                                  ///< FP first event in list
     FP_EVENT_OP_MODE_CHANGE,                                            ///< FP Op mode change event