Index: firmware/App/Services/TxParams.h
===================================================================
diff -u -ra12f3ce494cd2a18aee31659c17d8a619fc70f7d -rf37218b76c088f6143ad4ad89081ce8a9eaa991b
--- firmware/App/Services/TxParams.h	(.../TxParams.h)	(revision a12f3ce494cd2a18aee31659c17d8a619fc70f7d)
+++ firmware/App/Services/TxParams.h	(.../TxParams.h)	(revision f37218b76c088f6143ad4ad89081ce8a9eaa991b)
@@ -146,6 +146,27 @@
     U32 bolusVolume;                                                    ///< Requested bolus volume (in mL).
 } BOLUS_VOLUME_CHANGE_REQUEST_PAYLOAD_T;
 
+/// Payload record structure for vitals settings change request.
+typedef struct
+{
+    U32 systolicBpLowAlarmLimit;                                   ///< Requested systolic BP low alarm limit in mmHg.
+    U32 systolicBpHighAlarmLimit;                                  ///< Requested systolic BP high alarm limit in mmHg.
+    U32 heartRateLowAlarmLimit;                                    ///< Requested heart rate low alarm limit in BPM.
+    U32 heartRateHighAlarmLimit;                                   ///< Requested heart rate high alarm limit in BPM.
+    U32 vitalsMeasurementInterval_min;                             ///< Requested vitals measurement interval in minutes.
+} VITALS_ADJUSTMENT_REQUEST_PAYLOAD_T;
+
+/// Payload record structure for vitals settings change response.
+typedef struct
+{
+    BOOL accepted;                                                 ///< Accepted/Rejected.
+    U32 systolicBpLowAlarmLimitRejectionReason;                    ///< Rejection reason for systolic BP low alarm limit.
+    U32 systolicBpHighAlarmLimitRejectionReason;                   ///< Rejection reason for systolic BP high alarm limit.
+    U32 heartRateLowAlarmLimitRejectionReason;                     ///< Rejection reason for heart rate low alarm limit.
+    U32 heartRateHighAlarmLimitRejectionReason;                    ///< Rejection reason for heart rate high alarm limit.
+    U32 vitalsMeasurementIntervalRejectionReason;                  ///< Rejection reason for vitals measurement interval.
+} VITALS_ADJUSTMENT_RESPONSE_PAYLOAD_T;
+
 /// Payload record structure for pressure limit change request.
 typedef struct
 {
@@ -239,6 +260,7 @@
 // Edit Treatment parameter handlers
 BOOL validateAndSetTreatmentDuration( MESSAGE_T *message );                         // User provided treatment duration to be set and validated
 BOOL validateAndSetBolusVolume( MESSAGE_T *message );                               // User provided bolus volume to be set and validated
+BOOL vitalsAdjustmentHandleChangeRequest( MESSAGE_T *message );                     // User provided vitals settings to be validated and applied
 BOOL pressureLimitHandleChangeRequest( MESSAGE_T *message );                        // User provided pressure limit window values to be validated and applied
 BOOL validateAndSetUFVolume( MESSAGE_T *message );                                  // User provided ultrafiltration volume to be set and validated
 BOOL validateAndSetTreatmentSetPoints( MESSAGE_T *message );                        // User provided prescription setting values to be validated and applied