Index: firmware/App/Modes/ModeTreatment.h
===================================================================
diff -u -r421336466eff4ba9fef0ca5416043e5d83c63841 -rc92e2b5ae61f359e5633b32b2d5b691347d0d293
--- firmware/App/Modes/ModeTreatment.h	(.../ModeTreatment.h)	(revision 421336466eff4ba9fef0ca5416043e5d83c63841)
+++ firmware/App/Modes/ModeTreatment.h	(.../ModeTreatment.h)	(revision c92e2b5ae61f359e5633b32b2d5b691347d0d293)
@@ -7,8 +7,8 @@
 *
 * @file    ModeTreatment.h
 *
-* @author  (last)      Varshini Nagabooshanam
-* @date    (last)      09-Jan-2026
+* @author  (last)      Raghu Kallala
+* @date    (last)      06-Apr-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  21-Apr-2025
@@ -85,13 +85,23 @@
     U32 ufState;                                                    ///< Ultrafiltration state.
 } UF_DATA_PAYLOAD_T;
 
+/// Payload record structure for the in-line pressure limits change response.
+typedef struct
+{
+    BOOL accepted;                                          ///< Accepted.
+    U32  rejReasonCode;                                     ///< Rejection reason code number.
+    U32  artPresLimitWindowmmHg;                            ///< Arterial pressure limit window in mmHg.
+    U32  venPresLimitWindowmmHg;                            ///< Venous pressure limit window in mmHg.
+    U32  venPresLimitAsymmetricmmHg;                        ///< Venous pressure limit asymmetric in mmHg.
+    U32  tmpPresLimitWindowmmHg;                            ///< TMP pressure limit window in mmHg.
+} PRESSURE_LIMIT_CHANGE_RESPONSE_T;
+#pragma pack(pop)
+
 /// Maximum time in this mode before blood sitting alarm given (in general task intervals).
 #define MAX_TIME_BLOOD_SITTING      ( ( 5 * SEC_PER_MIN * MS_PER_SECOND ) / TASK_GENERAL_INTERVAL )
 /// Maximum time in this mode before blood sitting warning given (in general task intervals).
 #define WARN_TIME_BLOOD_SITTING     ( ( 4 * SEC_PER_MIN * MS_PER_SECOND ) / TASK_GENERAL_INTERVAL )
 
-#pragma pack(pop)
-
 // ********** public function prototypes **********
 
 void initTreatmentMode( void );                                      // Initialize this unit
@@ -115,6 +125,9 @@
 U32  getTreatmentStartTimeStamp( void );                             // Get the treatment start time stamp
 U32  getTreatmentEndTimeStamp( void );                               // Get the treatment end time stamp
 
+// MSG_ID_TD_PRESSURE_LIMITS_CHANGE_RESPONSE
+BOOL sendPressureLimitsChangeResponse( PRESSURE_LIMIT_CHANGE_RESPONSE_T *data );
+
 /**@}*/
 
 #endif