Index: MsgDefs.h
===================================================================
diff -u -rc307972e2a605d62e355847007e0db0c9876cf52 -rbf926947342bad2327352d878c681401a6b2d994
--- MsgDefs.h	(.../MsgDefs.h)	(revision c307972e2a605d62e355847007e0db0c9876cf52)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision bf926947342bad2327352d878c681401a6b2d994)
@@ -9,7 +9,7 @@
 * @file    MsgDefs.h
 *
 * @author  (last)      Raghu Kallala
-* @date    (last)      22-Apr-2026
+* @date    (last)      29-Apr-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  01-Aug-2024
@@ -92,12 +92,12 @@
     MSG_ID_TD_TREATMENT_STATE_DATA = 0x3C,                                          ///< TD treatment state data broadcast
     MSG_ID_TD_SALINE_BOLUS_DATA = 0x3D,                                             ///< TD saline bolus status data broadcast
     MSG_ID_TD_ULTRAFILTRATION_DATA = 0x3E,                                          ///< TD ultrafiltration status data broadcast
-    MSG_ID_UI_TREATMENT_PARAMS_TO_VALIDATE = 0x3F,                                  ///< UI treatment parameters (except UF volume) to be validated by TD
+    MSG_ID_UI_TREATMENT_PARAMS_TO_VALIDATE = 0x3F,                                  ///< UI treatment parameters to be validated by TD
     MSG_ID_TD_RESP_TREATMENT_PARAMS_TO_VALIDATE = 0x40,                             ///< TD response to treatment parameter validation request
-    MSG_ID_UI_ULTRAFILTRATION_VOLUME_TO_VALIDATE = 0x41,                            ///< UI ultrafiltration volume parameter to be validated by TD
-    MSG_ID_TD_RESP_ULTRAFILTRATION_VOLUME_TO_VALIDATE = 0x42,                       ///< TD response to ultrafiltration volume validation request
+    MSG_ID_AVAILABLE_2 = 0x41,                                                      ///< Available message ID 2
+    MSG_ID_AVAILABLE_4 = 0x42,                                                      ///< Available message ID 3
     MSG_ID_TD_TREATMENT_PARAM_RANGES = 0x43,                                        ///< TD treatment parameter ranges for UI
-    MSG_ID_UI_TREATMENT_PARAMS_CONFIRMED = 0x44,                                    ///< UI treatment parameters confirmed/rejected
+    MSG_ID_TD_VALIDATED_TREATMENT_PARAMS = 0x44,                                    ///< Treatment parameters validated and confirmed from TD
     MSG_ID_UI_INITIATE_TREATMENT_WORKFLOW = 0x45,                                   ///< UI initiate/cancel treatment workflow request
     MSG_ID_TD_RESP_INITIATE_TREATMENT_WORKFLOW = 0x46,                              ///< TD response to initiate/cancel treatment workflow request
     MSG_ID_UI_UF_PAUSE_RESUME_REQUEST = 0x47,                                       ///< UI ultrafiltration pause/resume request
@@ -380,7 +380,6 @@
     MSG_ID_DD_DIALYSATE_DELTA_CONDUCTIVITY_OVERRIDE_REQUEST = 0xA069,                   ///< DD Dialysate delta target conductivity override
     MSG_ID_DD_BICART_UPPER_PRESSURE_OVERRIDE_REQUEST = 0xA06A,                          ///< DD bicarb cartridge upper threshold pressure override
     MSG_ID_DD_BICART_LOWER_PRESSURE_OVERRIDE_REQUEST = 0xA06B,                          ///< DD bicarb cartridge lower threshold pressure override
-    MSG_ID_DD_FLOATER_LEVEL_OVERRIDE_REQUEST = 0xA06C,                                  ///< DD D6 floater level override
 
     MSG_ID_FIRST_FP_TESTER_MESSAGE = 0xB000,                                            ///< First FP test message ID
     MSG_ID_FP_TESTER_LOGIN_REQUEST = MSG_ID_FIRST_FP_TESTER_MESSAGE,                    ///< FP tester log-in
@@ -399,7 +398,7 @@
     MSG_ID_FP_PRESSURE_SENSOR_FILTER_TEMPERATURE_OVERRIDE_REQUEST = 0xB00D,             ///< FP pressure sensor filter temperature override request
     MSG_ID_FP_PRESSURE_PUBLISH_INTERVAL_OVERRIDE_REQUEST = 0xB00E,                      ///< FP pressures data publish interval override request
     MSG_ID_FP_LEVEL_PUBLISH_INTERVAL_OVERRIDE_REQUEST = 0xB00F,                         ///< FP level data publish interval override request
-    MSG_ID_FP_FLOATER_LEVEL_OVERRIDE_REQUEST = 0xB010,                                  ///< FP override request for P25 floater level sensor.
+    MSG_ID_FP_LEVEL_OVERRIDE_REQUEST = 0xB010,                                          ///< FP override request for level sensor.
     MSG_ID_FP_FLOWS_PUBLISH_INTERVAL_OVERRIDE_REQUEST = 0xB011,                         ///< FP flows data publish interval override request
     MSG_ID_FP_FLOW_RATE_OVERRIDE_REQUEST = 0xB012,                                      ///< FP override request for flow rate (mL/min)
     MSG_ID_FP_FLOW_TEMP_OVERRIDE_REQUEST = 0xB013,                                      ///< FP override request for flow temperature (deg C)
@@ -528,6 +527,10 @@
     REQUEST_REJECT_REASON_HEPARIN_PAUSE_INVALID_IN_THIS_STATE = 50,                 ///< Heparin cannot be paused if not currently deliverying Heparin
     REQUEST_REJECT_REASON_HEPARIN_NOT_PAUSED = 51,                                  ///< Heparin cannot be resumed if not paused
     REQUEST_REJECT_REASON_HEPARIN_VOLUME_EXCEEDS_10_ML = 52,                        ///< Heparin volume needed for treatment exceeds 10 mL maximum.
+    REQUEST_REJECT_REASON_PARAM_NOT_APPLICABLE = 53,                                ///< Treatment parameter not applicable for current treatment modality type
+    REQUEST_REJECT_REASON_ACID_CONV_FACTOR_MISMATCH = 54,                           ///< Acid conversion factor from UI mismatch with FW
+    REQUEST_REJECT_REASON_INVALID_PATIENT_WEIGHTS = 55,                             ///< Patient pre and estimated target weights are invalid
+    REQUEST_REJECT_REASON_UF_VOL_AND_WEIGHTS_INCONSISTENT = 56,                     ///< UF volume and the patient weights are not consistent
     NUM_OF_REQUEST_REJECT_REASONS                                                   ///< Number of settings change reject codes
 };
 typedef enum Request_Reject_Reasons REQUEST_REJECT_REASON_CODE_T;                   ///< Type for settings change rejection reason codes enumeration