Index: leahi_dialin/dd/modules/dd_test_configs.py
===================================================================
diff -u -r20c821bd230fc7689a0275a2918981669ff5cc19 -r6d104d3185ac3ed7c18c97ecdc13fd59bf53a8d1
--- leahi_dialin/dd/modules/dd_test_configs.py	(.../dd_test_configs.py)	(revision 20c821bd230fc7689a0275a2918981669ff5cc19)
+++ leahi_dialin/dd/modules/dd_test_configs.py	(.../dd_test_configs.py)	(revision 6d104d3185ac3ed7c18c97ecdc13fd59bf53a8d1)
@@ -8,30 +8,32 @@
 # @file    dd_test_configs.py
 #
 # @author  (last)      Zoltan Miskolci
-# @date    (last)      07-Jan-2026
+# @date    (last)      04-May-2026
 # @author  (original)  Jonny Paguio
 # @date    (original)  20-Aug-2025
 #
 ############################################################################
 
+# Module imports
 from logging import Logger
 
+# Project imports
 from leahi_dialin.common.constants import NO_RESET
 from leahi_dialin.common.msg_defs import MsgIds, MsgFieldPositions
 from leahi_dialin.common.override_templates import cmd_generic_override
 from leahi_dialin.common.test_config_defs import DDFPTestConfigOptions
-from leahi_dialin.protocols.CAN import DenaliChannels
-from leahi_dialin.utils.base import AbstractSubSystem, publish
+from leahi_dialin.protocols.CAN import DenaliCanMessenger, DenaliChannels
+from leahi_dialin.utils.abstract_classes import AbstractSubSystem
+from leahi_dialin.utils.base import publish
 from leahi_dialin.utils.conversions import integer_to_bytearray, bytearray_to_integer
 
 
-
 class DDTestConfig(AbstractSubSystem):
     """
     Dialysate Delivery (DD) Dialin API sub-class for setting and getting the test configurations.
     """
 
-    def __init__(self, can_interface, logger: Logger):
+    def __init__(self, can_interface: DenaliCanMessenger, logger: Logger):
         """
         @param can_interface: Denali CAN Messenger object
         """
@@ -41,10 +43,9 @@
         self.logger = logger
 
         if self.can_interface is not None:
-            channel_id = DenaliChannels.dd_to_dialin_ch_id
-            self.msg_id_dd_send_test_config = MsgIds.MSG_ID_DD_SEND_TEST_CONFIGURATION.value
-            self.can_interface.register_receiving_publication_function(channel_id, self.msg_id_dd_send_test_config,
-                                                                       self._handler_dd_test_config_sync)
+            self.can_interface.register_receiving_publication_function(channel_id = DenaliChannels.dd_to_dialin_ch_id,
+                                                                       message_id = MsgIds.MSG_ID_DD_SEND_TEST_CONFIGURATION.value,
+                                                                       function = self._handler_dd_test_config_sync)
         
         self.dd_test_configs_response_timestamp = 0.0           #: The timestamp of the latest message
         self.dd_test_configs = dict()                           #: The Test Config data in dictionary format