Index: firmware/App/Services/TxParams.h
===================================================================
diff -u -r1a3a2f806bb81b05f67f80efb94f1d82ce174c09 -r8cceda439faa23a1e927721c6a9ef8e4ee30c5be
--- firmware/App/Services/TxParams.h	(.../TxParams.h)	(revision 1a3a2f806bb81b05f67f80efb94f1d82ce174c09)
+++ firmware/App/Services/TxParams.h	(.../TxParams.h)	(revision 8cceda439faa23a1e927721c6a9ef8e4ee30c5be)
@@ -34,8 +34,8 @@
 // ********** public definitions **********
 
 #define MIN_PRESSURE_ALARM_LIMIT_DELTA_MMHG     ( 30 )                                      ///< Minimum pressure alarm limit delta (in mmHg)
-#define MAX_UF_RATE_L_HR                        ( 2.0F )                                    ///< Maximum ultrafiltration rate (in L/hr)
-#define MIN_UF_RATE_L_HR                        ( 0.0F )                                    ///< Minimum ultrafiltration rate (in L/hr)
+#define MAX_UF_RATE_ML_MIN                      ( 2000.01F / (F32)MIN_PER_HOUR )            ///< Maximum ultrafiltration rate (in mL/min).  Added small decimal to prevent float round off issues.
+#define MIN_UF_RATE_ML_MIN                      ( 0.0F )                                    ///< Minimum ultrafiltration rate (in mL/min).
 #define MAX_UF_VOLUME_ML                        ( 8 * ML_PER_LITER )                        ///< Maximum ultrafiltration volume (in mL).
 
 /// Record structure for a treatment parameters payload from UI.
@@ -135,6 +135,38 @@
     S32 tmpPressureLimitWindowMMHG;                  ///< TMP pressure limit window in mmHg.
 } PRESSURE_LIMIT_CHANGE_RESPONSE_T;
 
+/// Payload record structure for UF change response.
+typedef struct
+{
+    BOOL accepted;              ///< Accepted/Rejected
+    U32 rejectionReason;        ///< Rejection reason if not accepted.
+    F32 ufVolume;               ///< UF Volume in mL.
+    U32 durationInMinutes;      ///< new Treatment duration in minutes.
+    S32 timeDiff;               ///< Treatment duration difference.
+    F32 ufRate;                 ///< new UF rate in mL/min.
+    F32 rateDiff;               ///< difference between new and old UF rates.
+    F32 oldUFRate;              ///< Previous UF Rate in mL/min.
+} UF_SETTINGS_CHANGE_RESPONSE_PAYLOAD_T;
+
+/// Payload record structure for UF change confirmation response.
+typedef struct
+{
+    BOOL accepted;              ///< Accepted/Rejected
+    U32 rejectionReason;        ///< Rejection reason if not accepted.
+    F32 volume;                 ///< UF Volume in mL.
+    U32 duration;               ///< Treatment duration in minutes
+    F32 ufRate;                 ///< UF rate in mL.
+} UF_SETTINGS_CONFIRMATION_RESPONSE_PAYLOAD_T;
+
+/// Payload record structure for blood / dialysate rate change response.
+typedef struct
+{
+    BOOL accepted;              ///< Accepted/Rejected
+    U32 rejectionReason;        ///< Rejection reason if not accepted.
+    U32 bloodRate;              ///< new blood flow rate
+    U32 dialRate;               ///< new dialysate flow rate
+} BLOOD_DIAL_RATE_CHANGE_RESPONSE_PAYLOAD_T;
+
 // ********** public function prototypes ****************
 
 BOOL setTreatmentParameterU32( TREATMENT_PARAM_T param, U32 value );                // Set a specified unsigned integer treatment parameter value