diff --git a/src/common/Constants.py b/src/common/Constants.py
index c0b4cbf0511884148de34fdd891a256796d7d26a..a7bf198a7204677ed3669fc28a2c3528a5936425 100644
--- a/src/common/Constants.py
+++ b/src/common/Constants.py
@@ -83,7 +83,6 @@ DEFAULT_SERVICE_HTTP_PORTS = {
 
 # Default HTTP/REST-API service base URLs
 DEFAULT_SERVICE_HTTP_BASEURLS = {
-    ServiceNameEnum.CONTEXT   .value : '/api',
-    ServiceNameEnum.COMPUTE   .value : '/restconf/data',
+    ServiceNameEnum.COMPUTE   .value : '/restconf',
     ServiceNameEnum.WEBUI     .value : None,
 }
diff --git a/src/common/tools/descriptor/Loader.py b/src/common/tools/descriptor/Loader.py
index fc3b008b4004efe5afc270da65246c4635c777c3..5972d425be5298ec7fcb63bd28b50f3643363ae4 100644
--- a/src/common/tools/descriptor/Loader.py
+++ b/src/common/tools/descriptor/Loader.py
@@ -31,8 +31,8 @@
 #    for message,level in compose_notifications(results):
 #        loggers.get(level)(message)
 
-import json
-from typing import Dict, List, Optional, Tuple, Union
+import concurrent.futures, json, logging, operator
+from typing import Any, Dict, List, Optional, Tuple, Union
 from common.proto.context_pb2 import Connection, Context, Device, Link, Service, Slice, Topology
 from context.client.ContextClient import ContextClient
 from device.client.DeviceClient import DeviceClient
@@ -43,6 +43,8 @@ from .Tools import (
     get_descriptors_add_contexts, get_descriptors_add_services, get_descriptors_add_slices,
     get_descriptors_add_topologies, split_devices_by_rules)
 
+LOGGER = logging.getLogger(__name__)
+
 ENTITY_TO_TEXT = {
     # name   => singular,    plural
     'context'   : ('Context',    'Contexts'   ),
@@ -79,7 +81,7 @@ def compose_notifications(results : TypeResults) -> TypeNotificationList:
 
 class DescriptorLoader:
     def __init__(
-        self, descriptors : Union[str, Dict],
+        self, descriptors : Union[str, Dict], num_workers : int = 1,
         context_client : Optional[ContextClient] = None, device_client : Optional[DeviceClient] = None,
         service_client : Optional[ServiceClient] = None, slice_client : Optional[SliceClient] = None
     ) -> None:
@@ -93,6 +95,8 @@ class DescriptorLoader:
         self.__slices      = self.__descriptors.get('slices'     , [])
         self.__connections = self.__descriptors.get('connections', [])
 
+        self.__num_workers = num_workers
+
         self.__contexts_add   = None
         self.__topologies_add = None
         self.__devices_add    = None
@@ -242,12 +246,26 @@ class DescriptorLoader:
         #self.__dev_cli.close()
         #self.__ctx_cli.close()
 
+    @staticmethod
+    def worker(grpc_method, grpc_class, entity) -> Any:
+        return grpc_method(grpc_class(**entity))
+
     def _process_descr(self, entity_name, action_name, grpc_method, grpc_class, entities) -> None:
         num_ok, error_list = 0, []
-        for entity in entities:
-            try:
-                grpc_method(grpc_class(**entity))
-                num_ok += 1
-            except Exception as e: # pylint: disable=broad-except
-                error_list.append(f'{str(entity)}: {str(e)}')
+
+        with concurrent.futures.ThreadPoolExecutor(max_workers=self.__num_workers) as executor:
+            future_to_entity = {
+                executor.submit(DescriptorLoader.worker, grpc_method, grpc_class, entity): (i, entity)
+                for i,entity in enumerate(entities)
+            }
+
+            for future in concurrent.futures.as_completed(future_to_entity):
+                i, entity = future_to_entity[future]
+                try:
+                    _ = future.result()
+                    num_ok += 1
+                except Exception as e:  # pylint: disable=broad-except
+                    error_list.append((i, f'{str(entity)}: {str(e)}'))
+
+        error_list = [str_error for _,str_error in sorted(error_list, key=operator.itemgetter(0))]
         self.__results.append((entity_name, action_name, num_ok, error_list))
diff --git a/src/compute/service/__main__.py b/src/compute/service/__main__.py
index 998c4c98f21648f6e186ad91bae90875dac84fab..9705e3187ffff633a4d127855c1c57afcf397e39 100644
--- a/src/compute/service/__main__.py
+++ b/src/compute/service/__main__.py
@@ -26,7 +26,7 @@ from .rest_server.nbi_plugins.ietf_l2vpn import register_ietf_l2vpn
 terminate = threading.Event()
 LOGGER = None
 
-def signal_handler(signal, frame): # pylint: disable=redefined-outer-name
+def signal_handler(signal, frame): # pylint: disable=redefined-outer-name, unused-argument
     LOGGER.warning('Terminate signal received')
     terminate.set()
 
diff --git a/src/compute/service/rest_server/nbi_plugins/debug_api/Resources.py b/src/compute/service/rest_server/nbi_plugins/debug_api/Resources.py
index 0c66254d93220392d44c8393373ba94ddd7b3f93..67ef3dfb0ba1519440b0a22f46935165c8388cb8 100644
--- a/src/compute/service/rest_server/nbi_plugins/debug_api/Resources.py
+++ b/src/compute/service/rest_server/nbi_plugins/debug_api/Resources.py
@@ -12,48 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from flask.json import jsonify
 from flask_restful import Resource
-from common.proto.context_pb2 import ConnectionId, ContextId, DeviceId, Empty, LinkId, ServiceId, SliceId, TopologyId
-from common.proto.policy_pb2 import PolicyRuleId
-from common.tools.grpc.Tools import grpc_message_to_json
-from common.tools.object_factory.Connection import json_connection_id
-from common.tools.object_factory.Context import json_context_id
-from common.tools.object_factory.Device import json_device_id
-from common.tools.object_factory.Link import json_link_id
-from common.tools.object_factory.PolicyRule import json_policyrule_id
-from common.tools.object_factory.Service import json_service_id
-from common.tools.object_factory.Slice import json_slice_id
-from common.tools.object_factory.Topology import json_topology_id
+from common.proto.context_pb2 import Empty
 from context.client.ContextClient import ContextClient
-
-
-def format_grpc_to_json(grpc_reply):
-    return jsonify(grpc_message_to_json(grpc_reply))
-
-def grpc_connection_id(connection_uuid):
-    return ConnectionId(**json_connection_id(connection_uuid))
-
-def grpc_context_id(context_uuid):
-    return ContextId(**json_context_id(context_uuid))
-
-def grpc_device_id(device_uuid):
-    return DeviceId(**json_device_id(device_uuid))
-
-def grpc_link_id(link_uuid):
-    return LinkId(**json_link_id(link_uuid))
-
-def grpc_service_id(context_uuid, service_uuid):
-    return ServiceId(**json_service_id(service_uuid, context_id=json_context_id(context_uuid)))
-
-def grpc_slice_id(context_uuid, slice_uuid):
-    return SliceId(**json_slice_id(slice_uuid, context_id=json_context_id(context_uuid)))
-    
-def grpc_topology_id(context_uuid, topology_uuid):
-    return TopologyId(**json_topology_id(topology_uuid, context_id=json_context_id(context_uuid)))
-
-def grpc_policy_rule_id(policy_rule_uuid):
-    return PolicyRuleId(**json_policyrule_id(policy_rule_uuid))
+from .Tools import (
+    format_grpc_to_json, grpc_connection_id, grpc_context_id, grpc_device_id, grpc_link_id, grpc_policy_rule_id,
+    grpc_service_id, grpc_slice_id, grpc_topology_id)
 
 
 class _Resource(Resource):
diff --git a/src/compute/service/rest_server/nbi_plugins/debug_api/Tools.py b/src/compute/service/rest_server/nbi_plugins/debug_api/Tools.py
new file mode 100644
index 0000000000000000000000000000000000000000..f3dff545ba9812ff3f4e13c3da53774af7626014
--- /dev/null
+++ b/src/compute/service/rest_server/nbi_plugins/debug_api/Tools.py
@@ -0,0 +1,54 @@
+# Copyright 2022-2023 ETSI TeraFlowSDN - TFS OSG (https://tfs.etsi.org/)
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from flask.json import jsonify
+from common.proto.context_pb2 import ConnectionId, ContextId, DeviceId, LinkId, ServiceId, SliceId, TopologyId
+from common.proto.policy_pb2 import PolicyRuleId
+from common.tools.grpc.Tools import grpc_message_to_json
+from common.tools.object_factory.Connection import json_connection_id
+from common.tools.object_factory.Context import json_context_id
+from common.tools.object_factory.Device import json_device_id
+from common.tools.object_factory.Link import json_link_id
+from common.tools.object_factory.PolicyRule import json_policyrule_id
+from common.tools.object_factory.Service import json_service_id
+from common.tools.object_factory.Slice import json_slice_id
+from common.tools.object_factory.Topology import json_topology_id
+
+
+def format_grpc_to_json(grpc_reply):
+    return jsonify(grpc_message_to_json(grpc_reply))
+
+def grpc_connection_id(connection_uuid):
+    return ConnectionId(**json_connection_id(connection_uuid))
+
+def grpc_context_id(context_uuid):
+    return ContextId(**json_context_id(context_uuid))
+
+def grpc_device_id(device_uuid):
+    return DeviceId(**json_device_id(device_uuid))
+
+def grpc_link_id(link_uuid):
+    return LinkId(**json_link_id(link_uuid))
+
+def grpc_service_id(context_uuid, service_uuid):
+    return ServiceId(**json_service_id(service_uuid, context_id=json_context_id(context_uuid)))
+
+def grpc_slice_id(context_uuid, slice_uuid):
+    return SliceId(**json_slice_id(slice_uuid, context_id=json_context_id(context_uuid)))
+    
+def grpc_topology_id(context_uuid, topology_uuid):
+    return TopologyId(**json_topology_id(topology_uuid, context_id=json_context_id(context_uuid)))
+
+def grpc_policy_rule_id(policy_rule_uuid):
+    return PolicyRuleId(**json_policyrule_id(policy_rule_uuid))
diff --git a/src/compute/service/rest_server/nbi_plugins/debug_api/__init__.py b/src/compute/service/rest_server/nbi_plugins/debug_api/__init__.py
index d9243cca711a2b2ad00509102ecab5b06c6cc334..d1309353c412a738e2f2238d0bb4fff07765b825 100644
--- a/src/compute/service/rest_server/nbi_plugins/debug_api/__init__.py
+++ b/src/compute/service/rest_server/nbi_plugins/debug_api/__init__.py
@@ -12,52 +12,48 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# RFC 8466 - L2VPN Service Model (L2SM)
-# Ref: https://datatracker.ietf.org/doc/html/rfc8466
-
 from compute.service.rest_server.RestServer import RestServer
 from .Resources import (
     Connection, ConnectionIds, Connections, Context, ContextIds, Contexts, Device, DeviceIds, Devices, Link, LinkIds,
     Links, PolicyRule, PolicyRuleIds, PolicyRules, Service, ServiceIds, Services, Slice, SliceIds, Slices, Topologies,
     Topology, TopologyIds)
 
-URL_PREFIX = '/api'
+URL_PREFIX = '/debug-api'
 
-# Use 'path' type in Service and Sink because service_uuid and link_uuid might contain char '/' and Flask is unable to
-# recognize them in 'string' type.
+# Use 'path' type since some identifiers might contain char '/' and Flask is unable to recognize them in 'string' type.
 RESOURCES = [
     # (endpoint_name, resource_class, resource_url)
     ('api.context_ids',    ContextIds,    '/context_ids'),
     ('api.contexts',       Contexts,      '/contexts'),
-    ('api.context',        Context,       '/context/<string:context_uuid>'),
+    ('api.context',        Context,       '/context/<path:context_uuid>'),
 
-    ('api.topology_ids',   TopologyIds,   '/context/<string:context_uuid>/topology_ids'),
-    ('api.topologies',     Topologies,    '/context/<string:context_uuid>/topologies'),
-    ('api.topology',       Topology,      '/context/<string:context_uuid>/topology/<string:topology_uuid>'),
+    ('api.topology_ids',   TopologyIds,   '/context/<path:context_uuid>/topology_ids'),
+    ('api.topologies',     Topologies,    '/context/<path:context_uuid>/topologies'),
+    ('api.topology',       Topology,      '/context/<path:context_uuid>/topology/<path:topology_uuid>'),
 
-    ('api.service_ids',    ServiceIds,    '/context/<string:context_uuid>/service_ids'),
-    ('api.services',       Services,      '/context/<string:context_uuid>/services'),
-    ('api.service',        Service,       '/context/<string:context_uuid>/service/<path:service_uuid>'),
+    ('api.service_ids',    ServiceIds,    '/context/<path:context_uuid>/service_ids'),
+    ('api.services',       Services,      '/context/<path:context_uuid>/services'),
+    ('api.service',        Service,       '/context/<path:context_uuid>/service/<path:service_uuid>'),
 
-    ('api.slice_ids',      SliceIds,      '/context/<string:context_uuid>/slice_ids'),
-    ('api.slices',         Slices,        '/context/<string:context_uuid>/slices'),
-    ('api.slice',          Slice,         '/context/<string:context_uuid>/slice/<path:slice_uuid>'),
+    ('api.slice_ids',      SliceIds,      '/context/<path:context_uuid>/slice_ids'),
+    ('api.slices',         Slices,        '/context/<path:context_uuid>/slices'),
+    ('api.slice',          Slice,         '/context/<path:context_uuid>/slice/<path:slice_uuid>'),
 
     ('api.device_ids',     DeviceIds,     '/device_ids'),
     ('api.devices',        Devices,       '/devices'),
-    ('api.device',         Device,        '/device/<string:device_uuid>'),
+    ('api.device',         Device,        '/device/<path:device_uuid>'),
 
     ('api.link_ids',       LinkIds,       '/link_ids'),
     ('api.links',          Links,         '/links'),
     ('api.link',           Link,          '/link/<path:link_uuid>'),
 
-    ('api.connection_ids', ConnectionIds, '/context/<string:context_uuid>/service/<path:service_uuid>/connection_ids'),
-    ('api.connections',    Connections,   '/context/<string:context_uuid>/service/<path:service_uuid>/connections'),
+    ('api.connection_ids', ConnectionIds, '/context/<path:context_uuid>/service/<path:service_uuid>/connection_ids'),
+    ('api.connections',    Connections,   '/context/<path:context_uuid>/service/<path:service_uuid>/connections'),
     ('api.connection',     Connection,    '/connection/<path:connection_uuid>'),
 
     ('api.policyrule_ids', PolicyRuleIds, '/policyrule_ids'),
     ('api.policyrules',    PolicyRules,   '/policyrules'),
-    ('api.policyrule',     PolicyRule,    '/policyrule/<string:policyrule_uuid>'),
+    ('api.policyrule',     PolicyRule,    '/policyrule/<path:policyrule_uuid>'),
 ]
 
 def register_debug_api(rest_server : RestServer):
diff --git a/src/compute/service/rest_server/nbi_plugins/ietf_l2vpn/__init__.py b/src/compute/service/rest_server/nbi_plugins/ietf_l2vpn/__init__.py
index 1b9027b1feb7c65c6fb3ee6ecdef485e4719a1b5..110c51af5fe0e4cd8e012fd4105712ed176dd12a 100644
--- a/src/compute/service/rest_server/nbi_plugins/ietf_l2vpn/__init__.py
+++ b/src/compute/service/rest_server/nbi_plugins/ietf_l2vpn/__init__.py
@@ -21,7 +21,7 @@ from .L2VPN_Services import L2VPN_Services
 from .L2VPN_Service import L2VPN_Service
 from .L2VPN_SiteNetworkAccesses import L2VPN_SiteNetworkAccesses
 
-URL_PREFIX = '/ietf-l2vpn-svc:l2vpn-svc'
+URL_PREFIX = '/data/ietf-l2vpn-svc:l2vpn-svc'
 
 def _add_resource(rest_server : RestServer, resource : Resource, *urls, **kwargs):
     urls = [(URL_PREFIX + url) for url in urls]
diff --git a/src/device/service/DeviceServiceServicerImpl.py b/src/device/service/DeviceServiceServicerImpl.py
index 0258380a14df03204a7cb77c5a2d8b39aa3c64cc..be40e64ecd25a5c46c23d5ec0a73a2484b65691d 100644
--- a/src/device/service/DeviceServiceServicerImpl.py
+++ b/src/device/service/DeviceServiceServicerImpl.py
@@ -109,7 +109,7 @@ class DeviceServiceServicerImpl(DeviceServiceServicer):
             if device is None:
                 raise NotFoundException('Device', device_uuid, extra_details='loading in ConfigureDevice')
 
-            driver : _Driver = self.driver_instance_cache.get(device_uuid)
+            driver : _Driver = get_driver(self.driver_instance_cache, device)
             if driver is None:
                 msg = ERROR_MISSING_DRIVER.format(device_uuid=str(device_uuid))
                 raise OperationFailedException('ConfigureDevice', extra_details=msg)
@@ -150,6 +150,11 @@ class DeviceServiceServicerImpl(DeviceServiceServicer):
         self.mutex_queues.wait_my_turn(device_uuid)
         try:
             context_client = ContextClient()
+            device = get_device(context_client, device_uuid, rw_copy=False)
+            if device is None:
+                raise NotFoundException('Device', device_uuid, extra_details='loading in DeleteDevice')
+            device_uuid = device.device_id.device_uuid.uuid
+
             self.monitoring_loops.remove_device(device_uuid)
             self.driver_instance_cache.delete(device_uuid)
             context_client.RemoveDevice(request)
@@ -163,7 +168,12 @@ class DeviceServiceServicerImpl(DeviceServiceServicer):
 
         self.mutex_queues.wait_my_turn(device_uuid)
         try:
-            driver : _Driver = self.driver_instance_cache.get(device_uuid)
+            context_client = ContextClient()
+            device = get_device(context_client, device_uuid, rw_copy=False)
+            if device is None:
+                raise NotFoundException('Device', device_uuid, extra_details='loading in DeleteDevice')
+
+            driver : _Driver = get_driver(self.driver_instance_cache, device)
             if driver is None:
                 msg = ERROR_MISSING_DRIVER.format(device_uuid=str(device_uuid))
                 raise OperationFailedException('GetInitialConfig', extra_details=msg)
@@ -197,7 +207,12 @@ class DeviceServiceServicerImpl(DeviceServiceServicer):
 
         self.mutex_queues.wait_my_turn(device_uuid)
         try:
-            driver : _Driver = self.driver_instance_cache.get(device_uuid)
+            context_client = ContextClient()
+            device = get_device(context_client, device_uuid, rw_copy=False)
+            if device is None:
+                raise NotFoundException('Device', device_uuid, extra_details='loading in DeleteDevice')
+
+            driver : _Driver = get_driver(self.driver_instance_cache, device)
             if driver is None:
                 msg = ERROR_MISSING_DRIVER.format(device_uuid=str(device_uuid))
                 raise OperationFailedException('MonitorDeviceKpi', extra_details=msg)
diff --git a/src/webui/service/main/routes.py b/src/webui/service/main/routes.py
index 38d13aad562f3e55490952db84ef784f87697739..dcbbf71a6fee6ebd040f14c7d0d2cb07ba9ee085 100644
--- a/src/webui/service/main/routes.py
+++ b/src/webui/service/main/routes.py
@@ -34,6 +34,8 @@ slice_client = SliceClient()
 
 LOGGER = logging.getLogger(__name__)
 
+DESCRIPTOR_LOADER_NUM_WORKERS = 10
+
 def process_descriptors(descriptors):
     try:
         descriptors_file = request.files[descriptors.name]
@@ -43,7 +45,7 @@ def process_descriptors(descriptors):
         flash(f'Unable to load descriptor file: {str(e)}', 'danger')
         return
 
-    descriptor_loader = DescriptorLoader(descriptors)
+    descriptor_loader = DescriptorLoader(descriptors, num_workers=DESCRIPTOR_LOADER_NUM_WORKERS)
     results = descriptor_loader.process()
     for message,level in compose_notifications(results):
         if level == 'error': LOGGER.warning('ERROR message={:s}'.format(str(message)))