diff --git a/n2vc/k8s_helm3_conn.py b/n2vc/k8s_helm3_conn.py
index 4d8df93..82a29a6 100644
--- a/n2vc/k8s_helm3_conn.py
+++ b/n2vc/k8s_helm3_conn.py
@@ -97,24 +97,24 @@
 
         :return: True if successful
         """
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
-        self.log.debug("installing {} in cluster {}".format(kdu_model, cluster_id))
+
+        self.log.debug("installing {} in cluster {}".format(kdu_model, cluster_uuid))
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         # init env, paths
         paths, env = self._init_paths_env(
-            cluster_name=cluster_id, create_if_not_exist=True
+            cluster_name=cluster_uuid, create_if_not_exist=True
         )
 
         # for helm3 if namespace does not exist must create it
         if namespace and namespace != "kube-system":
-            if not await self._namespace_exists(cluster_id, namespace):
+            if not await self._namespace_exists(cluster_uuid, namespace):
                 try:
-                    await self._create_namespace(cluster_id, namespace)
+                    await self._create_namespace(cluster_uuid, namespace)
                 except Exception as e:
-                    if not await self._namespace_exists(cluster_id, namespace):
+                    if not await self._namespace_exists(cluster_uuid, namespace):
                         err_msg = (
                             "namespace {} does not exist in cluster_id {} "
                             "error message: ".format(namespace, e)
@@ -123,7 +123,7 @@
                         raise K8sException(err_msg)
 
         await self._install_impl(
-            cluster_id,
+            cluster_uuid,
             kdu_model,
             paths,
             env,
@@ -137,7 +137,7 @@
         )
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
         self.log.debug("Returning kdu_instance {}".format(kdu_instance))
         return True
@@ -314,12 +314,10 @@
             if namespace not in namespaces:
                 await self._create_namespace(cluster_id, namespace)
 
-        # If default repo is not included add
-        cluster_uuid = "{}:{}".format(namespace, cluster_id)
-        repo_list = await self.repo_list(cluster_uuid)
+        repo_list = await self.repo_list(cluster_id)
         stable_repo = [repo for repo in repo_list if repo["name"] == "stable"]
         if not stable_repo and self._stable_repo_url:
-            await self.repo_add(cluster_uuid, "stable", self._stable_repo_url)
+            await self.repo_add(cluster_id, "stable", self._stable_repo_url)
 
         # Returns False as no software needs to be uninstalled
         return False
diff --git a/n2vc/k8s_helm_base_conn.py b/n2vc/k8s_helm_base_conn.py
index 273b206..703bd73 100644
--- a/n2vc/k8s_helm_base_conn.py
+++ b/n2vc/k8s_helm_base_conn.py
@@ -89,14 +89,18 @@
         if self._stable_repo_url == "None":
             self._stable_repo_url = None
 
-    @staticmethod
-    def _get_namespace_cluster_id(cluster_uuid: str) -> (str, str):
+    def _get_namespace(self, cluster_uuid: str) -> str:
         """
-        Parses cluster_uuid stored at database that can be either 'namespace:cluster_id' or only
-        cluster_id for backward compatibility
+        Obtains the namespace used by the cluster with the uuid passed by argument
+
+        param: cluster_uuid: cluster's uuid
         """
-        namespace, _, cluster_id = cluster_uuid.rpartition(":")
-        return namespace, cluster_id
+
+        # first, obtain the cluster corresponding to the uuid passed by argument
+        k8scluster = self.db.get_one(
+            "k8sclusters", q_filter={"_id": cluster_uuid}, fail_on_empty=False
+        )
+        return k8scluster.get("namespace")
 
     async def init_env(
         self,
@@ -120,11 +124,9 @@
         """
 
         if reuse_cluster_uuid:
-            namespace_, cluster_id = self._get_namespace_cluster_id(reuse_cluster_uuid)
-            namespace = namespace_ or namespace
+            cluster_id = reuse_cluster_uuid
         else:
             cluster_id = str(uuid4())
-        cluster_uuid = "{}:{}".format(namespace, cluster_id)
 
         self.log.debug(
             "Initializing K8S Cluster {}. namespace: {}".format(cluster_id, namespace)
@@ -146,25 +148,24 @@
 
         self.log.info("Cluster {} initialized".format(cluster_id))
 
-        return cluster_uuid, n2vc_installed_sw
+        return cluster_id, n2vc_installed_sw
 
     async def repo_add(
         self, cluster_uuid: str, name: str, url: str, repo_type: str = "chart"
     ):
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
         self.log.debug(
             "Cluster {}, adding {} repository {}. URL: {}".format(
-                cluster_id, repo_type, name, url
+                cluster_uuid, repo_type, name, url
             )
         )
 
         # init_env
         paths, env = self._init_paths_env(
-            cluster_name=cluster_id, create_if_not_exist=True
+            cluster_name=cluster_uuid, create_if_not_exist=True
         )
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         # helm repo update
         command = "env KUBECONFIG={} {} repo update".format(
@@ -185,7 +186,7 @@
         )
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
     async def repo_list(self, cluster_uuid: str) -> list:
         """
@@ -194,16 +195,15 @@
         :return: list of registered repositories: [ (name, url) .... ]
         """
 
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
-        self.log.debug("list repositories for cluster {}".format(cluster_id))
+        self.log.debug("list repositories for cluster {}".format(cluster_uuid))
 
         # config filename
         paths, env = self._init_paths_env(
-            cluster_name=cluster_id, create_if_not_exist=True
+            cluster_name=cluster_uuid, create_if_not_exist=True
         )
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         command = "env KUBECONFIG={} {} repo list --output yaml".format(
             paths["kube_config"], self._helm_command
@@ -215,7 +215,7 @@
         )
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
         if _rc == 0:
             if output and len(output) > 0:
@@ -228,17 +228,17 @@
             return []
 
     async def repo_remove(self, cluster_uuid: str, name: str):
-
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
-        self.log.debug("remove {} repositories for cluster {}".format(name, cluster_id))
+        self.log.debug(
+            "remove {} repositories for cluster {}".format(name, cluster_uuid)
+        )
 
         # init env, paths
         paths, env = self._init_paths_env(
-            cluster_name=cluster_id, create_if_not_exist=True
+            cluster_name=cluster_uuid, create_if_not_exist=True
         )
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         command = "env KUBECONFIG={} {} repo remove {}".format(
             paths["kube_config"], self._helm_command, name
@@ -248,7 +248,7 @@
         )
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
     async def reset(
         self,
@@ -267,15 +267,15 @@
         :param kwargs: Additional parameters (None yet)
         :return: Returns True if successful or raises an exception.
         """
-        namespace, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+        namespace = self._get_namespace(cluster_uuid=cluster_uuid)
         self.log.debug(
             "Resetting K8s environment. cluster uuid: {} uninstall={}".format(
-                cluster_id, uninstall_sw
+                cluster_uuid, uninstall_sw
             )
         )
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         # uninstall releases if needed.
         if uninstall_sw:
@@ -304,20 +304,20 @@
                 else:
                     msg = (
                         "Cluster uuid: {} has releases and not force. Leaving K8s helm environment"
-                    ).format(cluster_id)
+                    ).format(cluster_uuid)
                     self.log.warn(msg)
                     uninstall_sw = (
                         False  # Allow to remove k8s cluster without removing Tiller
                     )
 
         if uninstall_sw:
-            await self._uninstall_sw(cluster_id, namespace)
+            await self._uninstall_sw(cluster_id=cluster_uuid, namespace=namespace)
 
         # delete cluster directory
-        self.log.debug("Removing directory {}".format(cluster_id))
-        self.fs.file_delete(cluster_id, ignore_non_exist=True)
+        self.log.debug("Removing directory {}".format(cluster_uuid))
+        self.fs.file_delete(cluster_uuid, ignore_non_exist=True)
         # Remove also local directorio if still exist
-        direct = self.fs.path + "/" + cluster_id
+        direct = self.fs.path + "/" + cluster_uuid
         shutil.rmtree(direct, ignore_errors=True)
 
         return True
@@ -426,11 +426,10 @@
         params: dict = None,
         db_dict: dict = None,
     ):
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
-        self.log.debug("upgrading {} in cluster {}".format(kdu_model, cluster_id))
+        self.log.debug("upgrading {} in cluster {}".format(kdu_model, cluster_uuid))
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         # look for instance to obtain namespace
         instance_info = await self.get_instance_info(cluster_uuid, kdu_instance)
@@ -439,15 +438,15 @@
 
         # init env, paths
         paths, env = self._init_paths_env(
-            cluster_name=cluster_id, create_if_not_exist=True
+            cluster_name=cluster_uuid, create_if_not_exist=True
         )
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         # params to str
         params_str, file_to_delete = self._params_to_file_option(
-            cluster_id=cluster_id, params=params
+            cluster_id=cluster_uuid, params=params
         )
 
         # version
@@ -477,7 +476,7 @@
             # write status in another task
             status_task = asyncio.ensure_future(
                 coro_or_future=self._store_status(
-                    cluster_id=cluster_id,
+                    cluster_id=cluster_uuid,
                     kdu_instance=kdu_instance,
                     namespace=instance_info["namespace"],
                     db_dict=db_dict,
@@ -505,7 +504,7 @@
 
         # write final status
         await self._store_status(
-            cluster_id=cluster_id,
+            cluster_id=cluster_uuid,
             kdu_instance=kdu_instance,
             namespace=instance_info["namespace"],
             db_dict=db_dict,
@@ -520,7 +519,7 @@
             raise K8sException(msg)
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
         # return new revision number
         instance = await self.get_instance_info(
@@ -563,12 +562,10 @@
             True if successful, False otherwise
         """
 
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
-
-        debug_mgs = "scaling {} in cluster {}".format(kdu_model, cluster_id)
+        debug_mgs = "scaling {} in cluster {}".format(kdu_model, cluster_uuid)
         if resource_name:
             debug_mgs = "scaling resource {} in model {} (cluster {})".format(
-                resource_name, kdu_model, cluster_id
+                resource_name, kdu_model, cluster_uuid
             )
 
         self.log.debug(debug_mgs)
@@ -581,7 +578,7 @@
 
         # init env, paths
         paths, env = self._init_paths_env(
-            cluster_name=cluster_id, create_if_not_exist=True
+            cluster_name=cluster_uuid, create_if_not_exist=True
         )
 
         # version
@@ -622,7 +619,7 @@
             # write status in another task
             status_task = asyncio.ensure_future(
                 coro_or_future=self._store_status(
-                    cluster_id=cluster_id,
+                    cluster_id=cluster_uuid,
                     kdu_instance=kdu_instance,
                     namespace=instance_info["namespace"],
                     db_dict=db_dict,
@@ -645,7 +642,7 @@
 
         # write final status
         await self._store_status(
-            cluster_id=cluster_id,
+            cluster_id=cluster_uuid,
             kdu_instance=kdu_instance,
             namespace=instance_info["namespace"],
             db_dict=db_dict,
@@ -660,7 +657,7 @@
             raise K8sException(msg)
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
         return True
 
@@ -685,9 +682,8 @@
             Resource instance count
         """
 
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
         self.log.debug(
-            "getting scale count for {} in cluster {}".format(kdu_model, cluster_id)
+            "getting scale count for {} in cluster {}".format(kdu_model, cluster_uuid)
         )
 
         # look for instance to obtain namespace
@@ -697,7 +693,7 @@
 
         # init env, paths
         paths, env = self._init_paths_env(
-            cluster_name=cluster_id, create_if_not_exist=True
+            cluster_name=cluster_uuid, create_if_not_exist=True
         )
 
         replicas = await self._get_replica_count_instance(
@@ -726,16 +722,14 @@
     async def rollback(
         self, cluster_uuid: str, kdu_instance: str, revision=0, db_dict: dict = None
     ):
-
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
         self.log.debug(
             "rollback kdu_instance {} to revision {} from cluster {}".format(
-                kdu_instance, revision, cluster_id
+                kdu_instance, revision, cluster_uuid
             )
         )
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         # look for instance to obtain namespace
         instance_info = await self.get_instance_info(cluster_uuid, kdu_instance)
@@ -744,11 +738,11 @@
 
         # init env, paths
         paths, env = self._init_paths_env(
-            cluster_name=cluster_id, create_if_not_exist=True
+            cluster_name=cluster_uuid, create_if_not_exist=True
         )
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         command = self._get_rollback_command(
             kdu_instance, instance_info["namespace"], revision, paths["kube_config"]
@@ -765,7 +759,7 @@
         # write status in another task
         status_task = asyncio.ensure_future(
             coro_or_future=self._store_status(
-                cluster_id=cluster_id,
+                cluster_id=cluster_uuid,
                 kdu_instance=kdu_instance,
                 namespace=instance_info["namespace"],
                 db_dict=db_dict,
@@ -784,7 +778,7 @@
 
         # write final status
         await self._store_status(
-            cluster_id=cluster_id,
+            cluster_id=cluster_uuid,
             kdu_instance=kdu_instance,
             namespace=instance_info["namespace"],
             db_dict=db_dict,
@@ -799,7 +793,7 @@
             raise K8sException(msg)
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
         # return new revision number
         instance = await self.get_instance_info(
@@ -824,13 +818,14 @@
         :return: True if successful
         """
 
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
         self.log.debug(
-            "uninstall kdu_instance {} from cluster {}".format(kdu_instance, cluster_id)
+            "uninstall kdu_instance {} from cluster {}".format(
+                kdu_instance, cluster_uuid
+            )
         )
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         # look for instance to obtain namespace
         instance_info = await self.get_instance_info(cluster_uuid, kdu_instance)
@@ -839,11 +834,11 @@
             return True
         # init env, paths
         paths, env = self._init_paths_env(
-            cluster_name=cluster_id, create_if_not_exist=True
+            cluster_name=cluster_uuid, create_if_not_exist=True
         )
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         command = self._get_uninstall_command(
             kdu_instance, instance_info["namespace"], paths["kube_config"]
@@ -853,7 +848,7 @@
         )
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
         return self._output_to_table(output)
 
@@ -865,17 +860,16 @@
         :return:
         """
 
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
-        self.log.debug("list releases for cluster {}".format(cluster_id))
+        self.log.debug("list releases for cluster {}".format(cluster_uuid))
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         # execute internal command
-        result = await self._instances_list(cluster_id)
+        result = await self._instances_list(cluster_uuid)
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
         return result
 
@@ -933,7 +927,6 @@
         - `external_ip` List of external ips (in case they are available)
         """
 
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
         self.log.debug(
             "get_services: cluster_uuid: {}, kdu_instance: {}".format(
                 cluster_uuid, kdu_instance
@@ -942,24 +935,24 @@
 
         # init env, paths
         paths, env = self._init_paths_env(
-            cluster_name=cluster_id, create_if_not_exist=True
+            cluster_name=cluster_uuid, create_if_not_exist=True
         )
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         # get list of services names for kdu
         service_names = await self._get_services(
-            cluster_id, kdu_instance, namespace, paths["kube_config"]
+            cluster_uuid, kdu_instance, namespace, paths["kube_config"]
         )
 
         service_list = []
         for service in service_names:
-            service = await self._get_service(cluster_id, service, namespace)
+            service = await self._get_service(cluster_uuid, service, namespace)
             service_list.append(service)
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
         return service_list
 
@@ -973,15 +966,13 @@
             )
         )
 
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
-
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
-        service = await self._get_service(cluster_id, service_name, namespace)
+        service = await self._get_service(cluster_uuid, service_name, namespace)
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
         return service
 
@@ -1015,13 +1006,11 @@
             )
         )
 
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
-
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         # get instance: needed to obtain namespace
-        instances = await self._instances_list(cluster_id=cluster_id)
+        instances = await self._instances_list(cluster_id=cluster_uuid)
         for instance in instances:
             if instance.get("name") == kdu_instance:
                 break
@@ -1029,12 +1018,12 @@
             # instance does not exist
             raise K8sException(
                 "Instance name: {} not found in cluster: {}".format(
-                    kdu_instance, cluster_id
+                    kdu_instance, cluster_uuid
                 )
             )
 
         status = await self._status_kdu(
-            cluster_id=cluster_id,
+            cluster_id=cluster_uuid,
             kdu_instance=kdu_instance,
             namespace=instance["namespace"],
             show_error_log=True,
@@ -1042,7 +1031,7 @@
         )
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
         return status
 
diff --git a/n2vc/k8s_helm_conn.py b/n2vc/k8s_helm_conn.py
index 5a788e9..b11ddd0 100644
--- a/n2vc/k8s_helm_conn.py
+++ b/n2vc/k8s_helm_conn.py
@@ -131,19 +131,18 @@
         :param kwargs: Additional parameters (None yet)
         :return: True if successful
         """
-        _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
-        self.log.debug("installing {} in cluster {}".format(kdu_model, cluster_id))
+        self.log.debug("installing {} in cluster {}".format(kdu_model, cluster_uuid))
 
         # sync local dir
-        self.fs.sync(from_path=cluster_id)
+        self.fs.sync(from_path=cluster_uuid)
 
         # init env, paths
         paths, env = self._init_paths_env(
-            cluster_name=cluster_id, create_if_not_exist=True
+            cluster_name=cluster_uuid, create_if_not_exist=True
         )
 
         await self._install_impl(
-            cluster_id,
+            cluster_uuid,
             kdu_model,
             paths,
             env,
@@ -157,7 +156,7 @@
         )
 
         # sync fs
-        self.fs.reverse_sync(from_path=cluster_id)
+        self.fs.reverse_sync(from_path=cluster_uuid)
 
         self.log.debug("Returning kdu_instance {}".format(kdu_instance))
         return True
@@ -342,15 +341,13 @@
             else:
                 self.log.info("Helm client already initialized")
 
-        # remove old stable repo and add new one
-        cluster_uuid = "{}:{}".format(namespace, cluster_id)
-        repo_list = await self.repo_list(cluster_uuid)
+        repo_list = await self.repo_list(cluster_id)
         for repo in repo_list:
             if repo["name"] == "stable" and repo["url"] != self._stable_repo_url:
                 self.log.debug("Add new stable repo url: {}")
-                await self.repo_remove(cluster_uuid, "stable")
+                await self.repo_remove(cluster_id, "stable")
                 if self._stable_repo_url:
-                    await self.repo_add(cluster_uuid, "stable", self._stable_repo_url)
+                    await self.repo_add(cluster_id, "stable", self._stable_repo_url)
                 break
 
         return n2vc_installed_sw
@@ -407,8 +404,13 @@
             output, _rc = await self._local_async_exec(
                 command=command, raise_exception_on_error=False, env=env
             )
-            command = "{} --kubeconfig={} --namespace kube-system delete serviceaccount/{}".format(
-                self.kubectl_command, paths["kube_config"], self.service_account
+            command = (
+                "{} --kubeconfig={} --namespace {} delete serviceaccount/{}".format(
+                    self.kubectl_command,
+                    paths["kube_config"],
+                    namespace,
+                    self.service_account,
+                )
             )
             output, _rc = await self._local_async_exec(
                 command=command, raise_exception_on_error=False, env=env
diff --git a/n2vc/tests/unit/test_k8s_helm3_conn.py b/n2vc/tests/unit/test_k8s_helm3_conn.py
index 4f5247b..9ae5a72 100644
--- a/n2vc/tests/unit/test_k8s_helm3_conn.py
+++ b/n2vc/tests/unit/test_k8s_helm3_conn.py
@@ -39,7 +39,7 @@
         self.fs.path = "./tmp/"
         self.namespace = "testk8s"
         self.cluster_id = "helm3_cluster_id"
-        self.cluster_uuid = "{}:{}".format(self.namespace, self.cluster_id)
+        self.cluster_uuid = self.cluster_id
         # pass fake kubectl and helm commands to make sure it does not call actual commands
         K8sHelm3Connector._check_file_exists = asynctest.Mock(return_value=True)
         cluster_dir = self.fs.path + self.cluster_id
@@ -66,8 +66,8 @@
 
         self.assertEqual(
             k8scluster_uuid,
-            "{}:{}".format(self.namespace, self.cluster_id),
-            "Check cluster_uuid format: <namespace>.<cluster_id>",
+            self.cluster_id,
+            "Check cluster_uuid",
         )
         self.helm_conn._get_namespaces.assert_called_once_with(self.cluster_id)
         self.helm_conn._create_namespace.assert_called_once_with(
@@ -651,6 +651,7 @@
                 "updated": "2020-10-30 11:11:20.376744191 +0000 UTC",
             }
         ]
+        self.helm_conn._get_namespace = Mock(return_value=self.namespace)
         self.helm_conn._uninstall_sw = asynctest.CoroutineMock()
         self.helm_conn.instances_list = asynctest.CoroutineMock(return_value=instances)
         self.helm_conn.uninstall = asynctest.CoroutineMock()
@@ -660,6 +661,9 @@
         self.helm_conn.fs.file_delete.assert_called_once_with(
             self.cluster_id, ignore_non_exist=True
         )
+        self.helm_conn._get_namespace.assert_called_once_with(
+            cluster_uuid=self.cluster_uuid
+        )
         self.helm_conn.instances_list.assert_called_once_with(
             cluster_uuid=self.cluster_uuid
         )
@@ -667,7 +671,7 @@
             cluster_uuid=self.cluster_uuid, kdu_instance=kdu_instance
         )
         self.helm_conn._uninstall_sw.assert_called_once_with(
-            self.cluster_id, self.namespace
+            cluster_id=self.cluster_id, namespace=self.namespace
         )
 
     @asynctest.fail_on(active_handles=True)
diff --git a/n2vc/tests/unit/test_k8s_helm_conn.py b/n2vc/tests/unit/test_k8s_helm_conn.py
index 8e58740..a6515f1 100644
--- a/n2vc/tests/unit/test_k8s_helm_conn.py
+++ b/n2vc/tests/unit/test_k8s_helm_conn.py
@@ -38,7 +38,7 @@
         self.namespace = "testk8s"
         self.service_account = "osm"
         self.cluster_id = "helm_cluster_id"
-        self.cluster_uuid = "{}:{}".format(self.namespace, self.cluster_id)
+        self.cluster_uuid = self.cluster_id
         # pass fake kubectl and helm commands to make sure it does not call actual commands
         K8sHelmConnector._check_file_exists = asynctest.Mock(return_value=True)
         K8sHelmConnector._local_async_exec = asynctest.CoroutineMock(
@@ -585,6 +585,7 @@
                 "updated": "2020-10-30 11:11:20.376744191 +0000 UTC",
             }
         ]
+        self.helm_conn._get_namespace = Mock(return_value=self.namespace)
         self.helm_conn._uninstall_sw = asynctest.CoroutineMock()
         self.helm_conn.instances_list = asynctest.CoroutineMock(return_value=instances)
         self.helm_conn.uninstall = asynctest.CoroutineMock()
@@ -594,6 +595,9 @@
         self.helm_conn.fs.file_delete.assert_called_once_with(
             self.cluster_id, ignore_non_exist=True
         )
+        self.helm_conn._get_namespace.assert_called_once_with(
+            cluster_uuid=self.cluster_uuid
+        )
         self.helm_conn.instances_list.assert_called_once_with(
             cluster_uuid=self.cluster_uuid
         )
@@ -601,7 +605,7 @@
             cluster_uuid=self.cluster_uuid, kdu_instance=kdu_instance
         )
         self.helm_conn._uninstall_sw.assert_called_once_with(
-            self.cluster_id, self.namespace
+            cluster_id=self.cluster_id, namespace=self.namespace
         )
 
     @asynctest.fail_on(active_handles=True)
@@ -636,8 +640,10 @@
         )
         call2_kargs = calls[2][1]
         command_2 = (
-            "/usr/bin/kubectl --kubeconfig={} --namespace kube-system delete "
-            "serviceaccount/{}".format(self.kube_config, self.service_account)
+            "/usr/bin/kubectl --kubeconfig={} --namespace {} delete "
+            "serviceaccount/{}".format(
+                self.kube_config, self.namespace, self.service_account
+            )
         )
         self.assertEqual(
             call2_kargs,