diff --git a/src/nbi/service/rest_server/nbi_plugins/ietf_hardware/YangHandler.py b/src/nbi/service/rest_server/nbi_plugins/ietf_hardware/YangHandler.py
index 33611adcf6662e17af17efa86c56af0b80e09cf0..7662261e97b35958f036dc0e69913af7947b9403 100644
--- a/src/nbi/service/rest_server/nbi_plugins/ietf_hardware/YangHandler.py
+++ b/src/nbi/service/rest_server/nbi_plugins/ietf_hardware/YangHandler.py
@@ -46,60 +46,45 @@ class YangHandler:
         dnode.free()
         return message
 
-    
     @staticmethod
     def convert_to_iso_date(date_str: str) -> Optional[str]:
         date_str = date_str.strip('"')
-        # Define the regex pattern for ISO 8601 date format
         pattern = r"\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d+)?(Z|[\+\-]\d{2}:\d{2})"
-        # Check if the input date string matches the pattern
         if re.match(pattern, date_str):
-            return date_str  # Already in ISO format
+            return date_str 
         else:
             try:
-                # Parse the input date string as a datetime object
                 datetime_obj = datetime.datetime.strptime(date_str, "%Y-%m-%d")
-                # Convert to ISO format
                 iso_date = datetime_obj.isoformat() + "Z"
                 return iso_date
             except ValueError:
-                return None  # Invalid date format
-
+                return None  
 
     def compose(self, device : Device) -> Dict:
         hardware = self._yang_context.create_data_path('/ietf-network-hardware-inventory:network-hardware-inventory')
         network_elements = hardware.create_path('network-elements')
-            
+
         network_element = network_elements.create_path('network-element[uuid="{:s}"]'.format(device.device_id.device_uuid.uuid))
         network_element.create_path('uuid', device.device_id.device_uuid.uuid)
         network_element.create_path('name', device.name)
         components = network_element.create_path('components')
         physical_index = 1
-        
+
         for component in device.components:
             attributes = component.attributes
-
             component_new = components.create_path('component[uuid="{:s}"]'.format(component.component_uuid.uuid))
             component_new.create_path('name', component.name)
-
-            #Cambiar las clases especiales, su formato  y añadir isfru 
             component_type = component.type
             if component_type == "TRANSCEIVER" :
                 component_type = "module"
-
             if component_type == "FRU" :
                 component_type = "slack"
 
             component_type = component_type.replace("_", "-").lower()
             component_type = 'iana-hardware:' + component_type
             component_new.create_path('class', component_type)
-
-            #Añadir resto de atributos en IETF
-
             physical_index += 1
-
             component_new.create_path('description', attributes["description"].replace('/"',""))
-
             if "CHASSIS" not in component.type:
                 parent_component_references = component_new.create_path('parent-component-references')
                 parent = parent_component_references.create_path('component-reference[index="{:d}"]'.format(physical_index))
@@ -107,7 +92,6 @@ class YangHandler:
                     if component.parent == component_parent.name : 
                       parent.create_path('uuid', component_parent.component_uuid.uuid)
                       break
-
             if attributes["mfg-date"] != "":
                 mfg_date = self.convert_to_iso_date(attributes["mfg-date"])
                 component_new.create_path('mfg-date', mfg_date)
@@ -137,7 +121,6 @@ class YangHandler:
 
             component_new.create_path('uri', component.name)
             component_new.create_path('uuid', component.component_uuid.uuid)
-
             for child in device.components:
                 if component.name == child.parent : 
                     component_new.create_path('contained-child', child.component_uuid.uuid)
diff --git a/src/nbi/service/rest_server/nbi_plugins/tfs_api/__init__.py b/src/nbi/service/rest_server/nbi_plugins/tfs_api/__init__.py
index 1f667f13466f98bb90e24c6f76854fc1362d0347..41e8ff1ea634869e69258c20f81f7c3db9767eb5 100644
--- a/src/nbi/service/rest_server/nbi_plugins/tfs_api/__init__.py
+++ b/src/nbi/service/rest_server/nbi_plugins/tfs_api/__init__.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 from nbi.service.rest_server.RestServer import RestServer
-from nbi.service.rest_server.nbi_plugins.ietf_hardware import Hardware, HardwareMultipleDevices
 from .Resources import (
     Connection, ConnectionIds, Connections,
     Context, ContextIds, Contexts,
@@ -51,7 +50,7 @@ RESOURCES = [
     ('api.device_ids',     DeviceIds,     '/device_ids'),
     ('api.devices',        Devices,       '/devices'),
     ('api.device',         Device,        '/device/<path:device_uuid>'),
-    
+
     ('api.link_ids',       LinkIds,       '/link_ids'),
     ('api.links',          Links,         '/links'),
     ('api.link',           Link,          '/link/<path:link_uuid>'),