Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r8a89e041755b26fad2530e1b8ad2cfeed1937b0a -r30cbd9ff622e635f16df3801aabeb15dfaf5fff5
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 8a89e041755b26fad2530e1b8ad2cfeed1937b0a)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 30cbd9ff622e635f16df3801aabeb15dfaf5fff5)
@@ -1987,7 +1987,53 @@
     sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_DG_2_HD, status );
 }
 
+/*********************************************************************//**
+ * @brief
+ * The sendRORejectionRatioRequestToHD function handles sending the RO
+ * rejection ratio request to HD
+ * @details Inputs: none
+ * @details Outputs: none
+ * @return none
+ *************************************************************************/
+void sendRORejectionRatioRequestToHD( void )
+{
+    MESSAGE_T msg;
 
+    // Create a message record
+    blankMessage( &msg );
+    msg.hdr.msgID      = MSG_ID_DG_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 handleRORejectionResponseFromHDInstitRecord function handles receiving
+ * 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 handleRORejectionResponseFromHDInstitRecord( MESSAGE_T* message )
+{
+    BOOL status = FALSE;
+
+    if ( message->hdr.payloadLen == sizeof(F32) )
+    {
+        F32 roRejectionRatio;
+
+        memcpy( &roRejectionRatio, message->payload, sizeof(F32) );
+
+
+        status = TRUE;
+    }
+
+    sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_DG_2_HD, status );
+}
+
 // ***********************************************************************
 // **************** Message Handling Helper Functions ********************
 // ***********************************************************************