Index: MsgDefs.h
===================================================================
diff -u -r38fca679ac07fa6a16fc4b756aebb4e3f95e207a -r0add9fc32d9990da9c06208d3a40445bda885ee9
--- MsgDefs.h	(.../MsgDefs.h)	(revision 38fca679ac07fa6a16fc4b756aebb4e3f95e207a)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision 0add9fc32d9990da9c06208d3a40445bda885ee9)
@@ -8,8 +8,8 @@
 *
 * @file    MsgDefs.h
 *
-* @author  (last)      Sameer Kalliadan Poyil
-* @date    (last)      29-Apr-2026
+* @author  (last)      Arpita Srivastava
+* @date    (last)      18-May-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  01-Aug-2024
@@ -195,6 +195,19 @@
     MSG_ID_UI_WATER_SAMPLE_RESULT_REQUEST = 0xA3,                                   ///< UI water sample result request
     MSG_ID_UI_PRESSURE_LIMIT_WIDEN_REQUEST = 0xA4,                                  ///< UI pressure limit widen request.
     MSG_ID_TD_PRESSURE_LIMIT_WIDEN_RESPONSE = 0xA5,                                 ///< TD pressure limit widen response.
+    MSG_ID_UI_RECIRCULATE_REQUEST = 0xA6,                                           ///< UI recirculate request
+    MSG_ID_TD_RECIRCULATE_RESPONSE = 0xA7,                                          ///< TD recirculate response
+    MSG_ID_TD_RECIRCULATE_DATA = 0xA8,                                              ///< TD recirculate data
+    MSG_ID_UI_ADJUST_TREATMENT_LOGS_REQUEST = 0xA9,                                 ///< UI adjust treatment logs request.
+    MSG_ID_TD_ADJUST_TREATMENT_LOGS_RESPONSE = 0xAA,                                ///< TD adjust treatment logs response
+    MSG_ID_UI_ADJUST_PATIENT_DISCONNECT_CONFIRM_REQUEST = 0xAB,                     ///< UI adjust patient disconnect confirm request
+    MSG_ID_TD_ADJUST_PATIENT_DISCONNECT_CONFIRM_RESPONSE = 0xAC,                    ///< TD adjust patient disconnect confirm response
+    MSG_ID_TD_DRY_SELF_TEST_PROGRESS_DATA = 0xAD,                                   ///< TD dry self test progress data
+    MSG_ID_TD_TUBING_SET_BARCODE_SCAN_REQUEST = 0xAE,                               ///< TD tube set authentication request
+    MSG_ID_TD_TUBE_SET_AUTHENTICATION_REQUEST = 0xAF,                               ///< UI tube set authentication acknowledge request
+    MSG_ID_TD_TUBE_SET_AUTHENTICATION_ACK_RESPONSE = 0xB0,                          ///< TD tube set authentication acknowledge response
+    MSG_ID_TD_SYRINGE_PUMP_DATA = 0xB1,                                             ///< TD broadcast of syringe pump data
+    MSG_ID_TD_HEPARIN_PAUSE_RESUME_RESPONSE= 0xB2,                                  ///< TD response to pause/resume Heparin delivery request
 
     // service/test CAN messages
     MSG_ID_FIRST_TD_TESTER_MESSAGE = 0x8000,                                        ///< First TD test message ID
@@ -270,6 +283,19 @@
     MSG_ID_TD_BLOOD_PRIME_VOLUME_OVERRIDE = 0x8045,                                 ///< TD blood prime override.
     MSG_ID_TD_BLOOD_PRIME_PUBLISH_INTERVAL_OVERRIDE_REQUEST = 0x8046,               ///< TD blood prime publish interval broadcast override.
     MSG_ID_TD_ENABLE_VENOUS_BUBBLE_ALARM = 0x8047,                                  ///< TD enable venous bubble alarm.
+    MSG_ID_TD_SYRINGE_PUMP_OPERATION_REQUEST = 0x8048,                              ///< TD syringe pump operation request
+    MSG_ID_HD_SYRINGE_PUMP_PUBLISH_INTERVAL_OVERRIDE = 0x8049,                      ///< TD syringe pump data publish interval override request
+    MSG_ID_TD_SYRINGE_PUMP_RATE_OVERRIDE_REQUEST = 0x8050,                          ///< TD syringe pump measured rate override request
+    MSG_ID_TD_SYRINGE_PUMP_FORCE_OVERRIDE_REQUEST = 0x8051,                         ///< TD syringe pump measured force override request
+    MSG_ID_TD_SYRINGE_PUMP_HOME_OVERRIDE_REQUEST = 0x8052,                          ///< TD syringe pump measured home override request
+    MSG_ID_TD_SYRINGE_PUMP_POSITION_OVERRIDE_REQUEST = 0x8053,                      ///< TD syringe pump measured position override request
+    MSG_ID_TD_SYRINGE_PUMP_VOLUME_OVERRIDE_REQUEST = 0x8054,                        ///< TD syringe pump measured volume override request
+    MSG_ID_TD_SYRINGE_PUMP_STATUS_OVERRIDE_REQUEST = 0x8055,                        ///< TD syringe pump status override request
+    MSG_ID_TD_SYRINGE_PUMP_ENCODER_STATUS_OVERRIDE_REQUEST = 0x8056,                ///< TD syringe pump Encoder status override request
+    MSG_ID_TD_SYRINGE_PUMP_ADC_DAC_STATUS_OVERRIDE_REQUEST = 0x8057,                ///< TD syringe pump ADC and DAC status override request
+    MSG_ID_TD_SYRINGE_PUMP_ADC_READ_COUNTER_OVERRIDE_REQUEST = 0x8058,              ///< TD syringe pump ADC read counter override request
+    MSG_ID_TD_HEPARIN_BOLUS_TARGET_RATE_OVERRIDE_REQUEST = 0x8059,                  ///< TD heparin bolus target rate override request
+    MSG_ID_TD_SYRINGE_PUMP_FORCE_SENSOR_CALIBRATION_REQUEST = 0x8060,               ///< TD set syringe pump force sensor DAC calibration request
 
     MSG_ID_FIRST_DD_TESTER_MESSAGE = 0xA000,                                            ///< First DD test message ID
     MSG_ID_DD_TESTER_LOGIN_REQUEST = MSG_ID_FIRST_DD_TESTER_MESSAGE,                    ///< DD tester log-in
@@ -532,8 +558,9 @@
     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
-    REQUEST_REJECT_REASON_CONFIRMATION_NOT_EXPECTED = 57,                           ///< Confirmation received without prior validation
-    REQUEST_REJECT_REASON_CONFIRMATION_MISMATCH = 58,                               ///< Confirmed value does not match validated value
+    REQUEST_REJECT_REASON_TD_AUTHENTICATION_INVALID = 57,                           ///< TD authentication invalid
+    REQUEST_REJECT_REASON_CONFIRMATION_NOT_EXPECTED = 58,                           ///< Confirmation received without prior validation
+    REQUEST_REJECT_REASON_CONFIRMATION_MISMATCH = 59,                               ///< Confirmed value does not match validated value
     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