Index: DDDefs.h
===================================================================
diff -u -re6ab4c9e5647c623668d8501ce77dcba804237b6 -rfd6490e75b0a4111decdaadb76526cd62df17cdd
--- DDDefs.h	(.../DDDefs.h)	(revision e6ab4c9e5647c623668d8501ce77dcba804237b6)
+++ DDDefs.h	(.../DDDefs.h)	(revision fd6490e75b0a4111decdaadb76526cd62df17cdd)
@@ -7,8 +7,8 @@
 *
 * @file    DDDefs.h
 *
-* @author  (last)      Santhosh Reddy
-* @date    (last)      06-Jul-2026
+* @author  (last)      Jashwant Gantyada
+* @date    (last)      29-Jul-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  01-Aug-2024
@@ -341,7 +341,12 @@
     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
@@ -488,6 +493,7 @@
 enum Spent_Chamber_Fill_Exec_States
 {
     SPENT_CHAMBER_FILL_STATE_START = 0,                            ///< Initial state of spent chamber fill
+    SPENT_CHAMBER_FILL_WAIT_PRESSURE_STABILIZE_STATE,              ///< Pressure Stabilization Wait state
     SPENT_CHAMBER_FILL_STATE1_FILL_START,                          ///< Spent chamber fill state 1 fill start state
     SPENT_CHAMBER_FILL_STATE1_DOSING_CNTRL,                        ///< Spent chamber fill state 1 dosing control
     SPENT_CHAMBER_FILL_STATE1_FILL_END,                            ///< Spent chamber fill state 1 fill end state