Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r509bb1d86829ca4fc315b6f3502bfbc66489d0b6 -rc7ed4f90b600fe684097654f150e4972646ffec9
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 509bb1d86829ca4fc315b6f3502bfbc66489d0b6)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision c7ed4f90b600fe684097654f150e4972646ffec9)
@@ -26,6 +26,7 @@
 #include "Fans.h"
 #include "FPGA.h"
 #include "Heaters.h"
+#include "ModeFill.h"
 #include "ModeFlush.h"
 #include "ModeGenIdle.h"
 #include "ModeInitPOST.h"
@@ -3286,13 +3287,43 @@
 
 /*********************************************************************//**
  * @brief
- * The handleSetFansDutyCycleOverrideRequest function handles a
- * request to override the fans duty cycle.
+ * The handleTestUsedAcidVolumeMLOverrideRequest function handles a
+ * request to override the acid volume.
  * @details Inputs: none
  * @details Outputs: message handled
- * @param message a pointer to the message to handle
+ * @param message : a pointer to the message to handle
  * @return none
  *************************************************************************/
+void handleTestUsedAcidVolumeMLOverrideRequest( MESSAGE_T *message )
+{
+    TEST_OVERRIDE_PAYLOAD_T payload;
+    BOOL result = FALSE;
+
+    // Verify payload length
+    if ( sizeof(TEST_OVERRIDE_PAYLOAD_T) == message->hdr.payloadLen )
+    {
+        memcpy( &payload, message->payload, sizeof(TEST_OVERRIDE_PAYLOAD_T) );
+        if ( FALSE == payload.reset )
+        {
+            result = testSetUsedAcidVolumeMLOverride( payload.state.f32 );
+        }
+        else
+        {
+            result = testResetUsedAcidVolumeMLOverride();
+        }
+    }
+
+    // Respond to request
+    sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
+}
+/*********************************************************************//**
+* The handleSetFansDutyCycleOverrideRequest function handles a
+* request to override the fans duty cycle.
+* @details Inputs: none
+* @details Outputs: message handled
+* @param message a pointer to the message to handle
+* @return none
+*************************************************************************/
 void handleSetFansDutyCycleOverrideRequest( MESSAGE_T *message )
 {
     TEST_OVERRIDE_PAYLOAD_T payload;
@@ -3318,6 +3349,38 @@
 }
 
 /*********************************************************************//**
+ * @brief
+ * The handleTestUsedBicarbVolumeMLOverrideRequest function handles a
+ * request to override the used bicarb volume.
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message : a pointer to the message to handle
+ * @return none
+ *************************************************************************/
+void handleTestUsedBicarbVolumeMLOverrideRequest( MESSAGE_T *message )
+{
+    TEST_OVERRIDE_PAYLOAD_T payload;
+    BOOL result = FALSE;
+
+    // Verify payload length
+    if ( sizeof(TEST_OVERRIDE_PAYLOAD_T) == message->hdr.payloadLen )
+    {
+        memcpy( &payload, message->payload, sizeof(TEST_OVERRIDE_PAYLOAD_T) );
+        if ( FALSE == payload.reset )
+        {
+            result = testSetUsedBicarbVolumeMLOverride( payload.state.f32 );
+        }
+        else
+        {
+            result = testResetUsedBicarbVolumeMLOverride();
+        }
+    }
+
+    // Respond to request
+    sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
+}
+
+/*********************************************************************//**
 * @brief
 * The handleGetDGSoftwareConfigRecord function handles a request to get the DG
 * software configuration record.