Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -rb23683bcde8aa940c30427a63dc1d261ece000fd -rd4a77f3ce8f62c8911b1f4f3a673be6de802f50b
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision b23683bcde8aa940c30427a63dc1d261ece000fd)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision d4a77f3ce8f62c8911b1f4f3a673be6de802f50b)
@@ -8,7 +8,7 @@
 * @file    SystemCommMessages.c
 *
 * @author  (last)      Dara Navaei
-* @date    (last)      23-Jul-2024
+* @date    (last)      08-Mar-2025
 *
 * @author  (original)  Dara Navaei
 * @date    (original)  05-Nov-2019
@@ -1987,7 +1987,53 @@
     sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_DG_2_HD, status );
 }
 
+/*********************************************************************//**
+ * @brief
+ * The sendMaxRORejectionRatioRequestToHD function handles sending the max RO
+ * rejection ratio request to HD
+ * @details Inputs: none
+ * @details Outputs: none
+ * @return none
+ *************************************************************************/
+void sendMaxRORejectionRatioRequestToHD( void )
+{
+    MESSAGE_T msg;
 
+    // Create a message record
+    blankMessage( &msg );
+    msg.hdr.msgID      = MSG_ID_DG_MAX_RO_REJ_RATIO_FROM_HD_INSTIT_RECORD_REQUEST;
+    msg.hdr.payloadLen = 0;
+
+    // Serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
+    serializeMessage( msg, COMM_BUFFER_OUT_CAN_DG_2_HD, ACK_REQUIRED );
+}
+
+/*********************************************************************//**
+ * @brief
+ * The handleMaxRORejectionResponseFromHDInstitRecord function handles receiving
+ * max RO rejection ratio response from HD institutional record
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message a pointer to the message to handle
+ * @return none
+ *************************************************************************/
+void handleMaxRORejectionResponseFromHDInstitRecord( MESSAGE_T* message )
+{
+    BOOL status = FALSE;
+
+    if ( message->hdr.payloadLen == sizeof(F32) )
+    {
+        F32 roRejectionRatio;
+
+        memcpy( &roRejectionRatio, message->payload, sizeof(F32) );
+        setMaxRORejectionRatio( roRejectionRatio );
+
+        status = TRUE;
+    }
+
+    sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_DG_2_HD, status );
+}
+
 // ***********************************************************************
 // **************** Message Handling Helper Functions ********************
 // ***********************************************************************
@@ -3875,37 +3921,6 @@
 }
 
 /*********************************************************************//**
- * 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
- * @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
@@ -3937,38 +3952,6 @@
     sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
 }
 
-/*********************************************************************//**
- * @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 );
-}
-
 #ifndef _RELEASE_
 /*********************************************************************//**
 * @brief