Index: firmware/App/Services/TxParams.c
===================================================================
diff -u -r12af1351f6db7747ebe2b4c52a9bac41ef551968 -r78f8971ee792bddaeb4c9c34294aa0929a908d5d
--- firmware/App/Services/TxParams.c	(.../TxParams.c)	(revision 12af1351f6db7747ebe2b4c52a9bac41ef551968)
+++ firmware/App/Services/TxParams.c	(.../TxParams.c)	(revision 78f8971ee792bddaeb4c9c34294aa0929a908d5d)
@@ -123,7 +123,7 @@
     { CRITICAL_DATA_TYPE_U32, {.uInt=300},  {.uInt=500},  {.uInt=300}  }, // TREATMENT_PARAM_PRIME_RINSEBACK_VOLUME
     { CRITICAL_DATA_TYPE_U32, {.uInt=0},    {.uInt=3},    {.uInt=0}    }, // TREATMENT_PARAM_HEPATITIS_B
     { CRITICAL_DATA_TYPE_U32, {.uInt=0},    {.uInt=2},    {.uInt=0}    }, // TREATMENT_PARAM_ACID_CONCENTRATE
-    { CRITICAL_DATA_TYPE_U32, {.uInt=0},    {.uInt=1},    {.uInt=0}    }, // TREATMENT_PARAM_CONFIRMATION
+//    { CRITICAL_DATA_TYPE_U32, {.uInt=0},    {.uInt=1},    {.uInt=0}    }, // TREATMENT_PARAM_CONFIRMATION
     { CRITICAL_DATA_TYPE_F32, {.sFlt=0.0},  {.sFlt=48.0}, {.sFlt=1.0}  }, // TREATMENT_PARAM_SUBST_FLUID_VOLUME
     { CRITICAL_DATA_TYPE_F32, {.sFlt=0.0},  {.sFlt=2.0},  {.sFlt=0.0}  }, // TREATMENT_PARAM_HEPARIN_BOLUS_VOLUME
     { CRITICAL_DATA_TYPE_F32, {.sFlt=0.0},  {.sFlt=3.0},  {.sFlt=0.0}  }, // TREATMENT_PARAM_HEPARIN_DELIVERY_RATE
@@ -230,8 +230,6 @@
         sysConfigTreatmentParameters[ sysConfigTxParam ].maximum = SYS_CONFIG_TREAT_PARAMS_PROPERTIES[ sysConfigTxParam ].max;
         sysConfigTreatmentParameters[ sysConfigTxParam ].defValue = SYS_CONFIG_TREAT_PARAMS_PROPERTIES[ sysConfigTxParam ].def;
         resetCriticalData( &sysConfigTreatmentParameters[ sysConfigTxParam ] );
-        // Set staged parameter values to zero
-//        stagedParams[ param ].uInt = 0;
     }
 
     // Zero original parameter values
@@ -450,18 +448,20 @@
     // Verify message payload length is valid
     if ( sizeof( TREATMENT_PARAMS_DATA_PAYLOAD_T ) == message->hdr.payloadLen )
     {
-        memcpy( &params, message->payload, sizeof( TREATMENT_PARAMS_DATA_PAYLOAD_T ) );
+        // copy only the treatment parameters excluding the confirmation payload field
+        memcpy( &params, message->payload + sizeof(BOOL), sizeof( TREATMENT_PARAMS_DATA_PAYLOAD_T ) - sizeof(BOOL) );
 
+        // Flag indicating if the user have sent the tx params validation from pre-treatment create rx state,
+        // so that if all params are valid, TD software will transition state to patient connection
+        memcpy( &paramsConfirmed, message->payload, sizeof(BOOL) );
         // Check the received arterial and venous pressure values from the UI to be checked and capped against the min and max
         // values in the institutional record
         // checkPressureParamsRange( &params ); // TODO do as pre-check when user click create tx
 
         // Extract treatment parameters from given payload to staging array so we can more easily work with them
         extractTreatmentParamsFromPayload( params );
-        // Flag that indicates if the user have sent the tx params validation from pre-treatment create rx state,
-        // so that if all params are valid, TD software will transition state to patient connection
-        paramsConfirmed = (BOOL)stagedParams[ TREATMENT_PARAM_TREATMENT_DURATION ].uInt;
 
+
         // Range check each treatment parameter
         paramsAreInRange = checkTreatmentParamsInRange( &rejReasons[0] );
 
Index: firmware/App/Services/TxParams.h
===================================================================
diff -u -r12af1351f6db7747ebe2b4c52a9bac41ef551968 -r78f8971ee792bddaeb4c9c34294aa0929a908d5d
--- firmware/App/Services/TxParams.h	(.../TxParams.h)	(revision 12af1351f6db7747ebe2b4c52a9bac41ef551968)
+++ firmware/App/Services/TxParams.h	(.../TxParams.h)	(revision 78f8971ee792bddaeb4c9c34294aa0929a908d5d)
@@ -41,6 +41,7 @@
 /// Record structure for a treatment parameters payload from UI.
 typedef struct
 {
+    BOOL finalConfirmation;                     ///< Confirmation flag indicating treatment params validated are final
     U32 treatmentModality;                      ///< User set treatment modality option
     U32 hdfDilution;                            ///< User set HDF dilution option
     U32 bloodFlowRate_mL_min;                   ///< User set blood flow rate (in mL/min)
@@ -57,7 +58,6 @@
     U32 rinsebackVolume_mL;                     ///< User set rinseback volume (in mL)
     U32 hepatitisBStatus;                       ///< User set Hepatitis B status option
     U32 acidConcentrate;                        ///< User set acid concentrate option
-    U32 finalConfirmation;                      ///< Confirmation flag indicating treatment params validated are final
     F32 substitutionFluidVolume_L;              ///< User set substitution fluid volume (in L)
     F32 hepBolusVolume_mL;                      ///< User set Heparin bolus volume (in mL)
     F32 hepDeliveryRate_mL_hr;                  ///< User set Heparin delivery rate (in mL/hr)