diff --git a/setup.py b/setup.py
index 0ae0aff48..917100324 100644
--- a/setup.py
+++ b/setup.py
@@ -58,7 +58,7 @@
     test_suite="tests",
     tests_require=test_requirements,
     url="https://github.com/avaiga/taipy-core",
-    version="2.0.1",
+    version="2.0.2",
     zip_safe=False,
     extras_require=extras_require,
 )
diff --git a/src/taipy/core/common/_utils.py b/src/taipy/core/common/_utils.py
index 622577d04..d772ba43d 100644
--- a/src/taipy/core/common/_utils.py
+++ b/src/taipy/core/common/_utils.py
@@ -34,7 +34,7 @@ def _fct_to_dict(obj):
     params = []
     callback = obj
 
-    if isinstance(obj, Subscriber):
+    if isinstance(obj, _Subscriber):
         callback = obj.callback
         params = obj.params
 
@@ -52,4 +52,4 @@ def _fcts_to_dict(objs):
     return [d for obj in objs if (d := _fct_to_dict(obj)) is not None]
 
 
-Subscriber = namedtuple("Subscriber", "callback params")
+_Subscriber = namedtuple("_Subscriber", "callback params")
diff --git a/src/taipy/core/config/__init__.py b/src/taipy/core/config/__init__.py
index aa3f3e01e..5a06bec1c 100644
--- a/src/taipy/core/config/__init__.py
+++ b/src/taipy/core/config/__init__.py
@@ -11,6 +11,9 @@
 
 from taipy.config.checker._checker import _Checker
 from taipy.config.config import Config
+from taipy.config.common.frequency import Frequency
+from taipy.config.common.scope import Scope
+from taipy.config.global_app.global_app_config import GlobalAppConfig
 
 from .checkers._data_node_config_checker import _DataNodeConfigChecker
 from .checkers._job_config_checker import _JobConfigChecker
diff --git a/src/taipy/core/config/pipeline_config.py b/src/taipy/core/config/pipeline_config.py
index 3c8b7267a..8ef1e5ab5 100644
--- a/src/taipy/core/config/pipeline_config.py
+++ b/src/taipy/core/config/pipeline_config.py
@@ -65,7 +65,7 @@ def _to_dict(self):
     @classmethod
     def _from_dict(cls, as_dict: Dict[str, Any], id: str, config: Optional[_Config]):
         as_dict.pop(cls._ID_KEY, id)
-        t_configs = config._sections[TaskConfig.name]
+        t_configs = config._sections[TaskConfig.name]  # type: ignore
         tasks = []
         if tasks_ids := as_dict.pop(cls._TASK_KEY, None):
             tasks = [t_configs[task_id] for task_id in tasks_ids if task_id in t_configs]
diff --git a/src/taipy/core/config/scenario_config.py b/src/taipy/core/config/scenario_config.py
index af7eb8184..b3f87e5b4 100644
--- a/src/taipy/core/config/scenario_config.py
+++ b/src/taipy/core/config/scenario_config.py
@@ -91,9 +91,9 @@ def _to_dict(self):
         }
 
     @classmethod
-    def _from_dict(cls, as_dict: Dict[str, Any], id: str, config: Optional[_Config]):
+    def _from_dict(cls, as_dict: Dict[str, Any], id: str, config: Optional[_Config]):  # type: ignore
         as_dict.pop(cls._ID_KEY, id)
-        p_configs = config._sections[PipelineConfig.name]
+        p_configs = config._sections[PipelineConfig.name]  # type: ignore
         pipelines = []
         if pipeline_ids := as_dict.pop(cls._PIPELINE_KEY, None):
             pipelines = [p_configs[p_id] for p_id in pipeline_ids if p_id in p_configs]
diff --git a/src/taipy/core/config/task_config.py b/src/taipy/core/config/task_config.py
index 06af57503..d22782539 100644
--- a/src/taipy/core/config/task_config.py
+++ b/src/taipy/core/config/task_config.py
@@ -27,11 +27,9 @@ class TaskConfig(Section):
     Attributes:
         id (str): Identifier of the task config. Must be a valid Python variable name.
         inputs (Union[DataNodeConfig, List[DataNodeConfig]]): The optional list of `DataNodeConfig^` inputs. The
-        default
-            value is [].
+            default value is [].
         outputs (Union[DataNodeConfig, List[DataNodeConfig]]): The optional list of `DataNodeConfig^` outputs. The
-        default
-            value is [].
+            default value is [].
         function (Callable): User function taking as inputs some parameters compatible with the exposed types
             (exposed_type field) of the input data nodes and returning results compatible with the exposed types
             (exposed_type field) of the outputs list. The default value is None.
@@ -101,7 +99,7 @@ def _to_dict(self):
     def _from_dict(cls, as_dict: Dict[str, Any], id: str, config: Optional[_Config]):
         as_dict.pop(cls._ID_KEY, id)
         funct = as_dict.pop(cls._FUNCTION, None)
-        dn_configs = config._sections[DataNodeConfig.name]
+        dn_configs = config._sections[DataNodeConfig.name]  # type: ignore
         inputs = []
         if inputs_as_str := as_dict.pop(cls._INPUT_KEY, None):
             inputs = [dn_configs[dn_id] for dn_id in inputs_as_str if dn_id in dn_configs]
diff --git a/src/taipy/core/data/__init__.py b/src/taipy/core/data/__init__.py
index 16819c78b..00f4a4757 100644
--- a/src/taipy/core/data/__init__.py
+++ b/src/taipy/core/data/__init__.py
@@ -16,6 +16,7 @@
 from .generic import GenericDataNode
 from .in_memory import InMemoryDataNode
 from .json import JSONDataNode
+from .operator import JoinOperator, Operator
 from .pickle import PickleDataNode
 from .sql import SQLDataNode
 from .sql_table import SQLTableDataNode
diff --git a/src/taipy/core/data/abstract_sql.py b/src/taipy/core/data/abstract_sql.py
index e4c098d88..59000e486 100644
--- a/src/taipy/core/data/abstract_sql.py
+++ b/src/taipy/core/data/abstract_sql.py
@@ -18,18 +18,17 @@
 
 import pandas as pd
 from sqlalchemy import create_engine, text
-
 from taipy.config.common.scope import Scope
 
+from .data_node import DataNode
 from ..common.alias import DataNodeId, JobId
 from ..exceptions.exceptions import InvalidExposedType, MissingRequiredProperty, UnknownDatabaseEngine
-from .data_node import DataNode
 
 
 class AbstractSQLDataNode(DataNode):
     """Abstract base class for data node implementations (SQLDataNode and SQLTableDataNode) that use SQL."""
 
-    __STORAGE_TYPE = None
+    __STORAGE_TYPE = "NOT_IMPLEMENTED"
     __EXPOSED_TYPE_NUMPY = "numpy"
     __EXPOSED_TYPE_PANDAS = "pandas"
     __VALID_STRING_EXPOSED_TYPES = [__EXPOSED_TYPE_PANDAS, __EXPOSED_TYPE_NUMPY]
diff --git a/src/taipy/core/data/json.py b/src/taipy/core/data/json.py
index 7932299e4..31635c432 100644
--- a/src/taipy/core/data/json.py
+++ b/src/taipy/core/data/json.py
@@ -96,8 +96,8 @@ def __init__(
             edit_in_progress,
             **properties,
         )
-        self._decoder = self._properties.get(self._DECODER_KEY, DefaultJSONDecoder)
-        self._encoder = self._properties.get(self._ENCODER_KEY, DefaultJSONEncoder)
+        self._decoder = self._properties.get(self._DECODER_KEY, _DefaultJSONDecoder)
+        self._encoder = self._properties.get(self._ENCODER_KEY, _DefaultJSONEncoder)
 
         if not self._last_edit_date and isfile(self._path):  # type: ignore
             self.unlock_edit()
@@ -143,7 +143,7 @@ def _write(self, data: Any):
             json.dump(data, f, indent=4, cls=self._encoder)
 
 
-class DefaultJSONEncoder(json.JSONEncoder):
+class _DefaultJSONEncoder(json.JSONEncoder):
     def default(self, o):
         if isinstance(o, Enum):
             return o.value
@@ -154,5 +154,5 @@ def default(self, o):
         return super().default(o)
 
 
-class DefaultJSONDecoder(json.JSONDecoder):
+class _DefaultJSONDecoder(json.JSONDecoder):
     pass
diff --git a/src/taipy/core/exceptions/__init__.py b/src/taipy/core/exceptions/__init__.py
index e0c595bfb..ca1da7959 100644
--- a/src/taipy/core/exceptions/__init__.py
+++ b/src/taipy/core/exceptions/__init__.py
@@ -8,3 +8,5 @@
 # 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 .exceptions import *
diff --git a/src/taipy/core/job/status.py b/src/taipy/core/job/status.py
index 4148fb465..c10afbda6 100644
--- a/src/taipy/core/job/status.py
+++ b/src/taipy/core/job/status.py
@@ -37,6 +37,9 @@ class Status(_ReprEnum):
     - `COMPLETED`: A `COMPLETED` job has successfully been executed.
 
     - `SKIPPED`: A `SKIPPED` job has not been executed because its outputs were already computed.
+
+    - `ABANDONED`: An `ABANDONED` job has not been executed because it depends on a job that could not complete (
+        cancelled, failed, or abandoned).
     """
 
     SUBMITTED = 1
diff --git a/src/taipy/core/pipeline/_pipeline_manager.py b/src/taipy/core/pipeline/_pipeline_manager.py
index 4e066c2ae..eaac669cb 100644
--- a/src/taipy/core/pipeline/_pipeline_manager.py
+++ b/src/taipy/core/pipeline/_pipeline_manager.py
@@ -14,6 +14,8 @@
 
 from taipy.config.common.scope import Scope
 
+from ._pipeline_repository_factory import _PipelineRepositoryFactory
+from .pipeline import Pipeline
 from .._manager._manager import _Manager
 from ..common._entity_ids import _EntityIds
 from ..common.alias import PipelineId, ScenarioId
@@ -22,8 +24,6 @@
 from ..job._job_manager_factory import _JobManagerFactory
 from ..job.job import Job
 from ..task._task_manager_factory import _TaskManagerFactory
-from ._pipeline_repository_factory import _PipelineRepositoryFactory
-from .pipeline import Pipeline
 
 
 class _PipelineManager(_Manager[Pipeline]):
@@ -73,7 +73,7 @@ def __remove_subscriber(cls, callback, params, pipeline):
 
     @classmethod
     def _get_or_create(cls, pipeline_config: PipelineConfig, scenario_id: Optional[ScenarioId] = None) -> Pipeline:
-        pipeline_id = Pipeline._new_id(pipeline_config.id)
+        pipeline_id = Pipeline._new_id(str(pipeline_config.id))
 
         task_manager = _TaskManagerFactory._build_manager()
         tasks = task_manager._bulk_get_or_create(pipeline_config.task_configs, scenario_id, pipeline_id)
@@ -81,10 +81,10 @@ def _get_or_create(cls, pipeline_config: PipelineConfig, scenario_id: Optional[S
         scope = min(task.scope for task in tasks) if len(tasks) != 0 else Scope.GLOBAL
         parent_id = scenario_id if scope == Scope.SCENARIO else pipeline_id if scope == Scope.PIPELINE else None
 
-        if pipelines_from_parent := cls._repository._get_by_config_and_parent_id(pipeline_config.id, parent_id):  # type: ignore
+        if pipelines_from_parent := cls._repository._get_by_config_and_parent_id(str(pipeline_config.id), parent_id):
             return pipelines_from_parent
 
-        pipeline = Pipeline(pipeline_config.id, dict(**pipeline_config._properties), tasks, pipeline_id, parent_id)
+        pipeline = Pipeline(str(pipeline_config.id), dict(**pipeline_config._properties), tasks, pipeline_id, parent_id)
         cls._set(pipeline)
         return pipeline
 
diff --git a/src/taipy/core/pipeline/_pipeline_repository.py b/src/taipy/core/pipeline/_pipeline_repository.py
index e7908385d..55b9654f7 100644
--- a/src/taipy/core/pipeline/_pipeline_repository.py
+++ b/src/taipy/core/pipeline/_pipeline_repository.py
@@ -15,7 +15,7 @@
 from .._repository._repository import _AbstractRepository
 from .._repository._repository_adapter import _RepositoryAdapter
 from ..common import _utils
-from ..common._utils import Subscriber
+from ..common._utils import _Subscriber
 from ..exceptions.exceptions import NonExistingPipeline, NonExistingTask
 from ..task.task import Task
 from ._pipeline_model import _PipelineModel
@@ -59,7 +59,7 @@ def _from_model(self, model: _PipelineModel) -> Pipeline:
                 model.id,
                 model.parent_id,
                 [
-                    Subscriber(_utils._load_fct(it["fct_module"], it["fct_name"]), it["fct_params"])
+                    _Subscriber(_utils._load_fct(it["fct_module"], it["fct_name"]), it["fct_params"])
                     for it in model.subscribers
                 ],  # type: ignore
             )
diff --git a/src/taipy/core/pipeline/pipeline.py b/src/taipy/core/pipeline/pipeline.py
index 6f1394de5..120c6f2a7 100644
--- a/src/taipy/core/pipeline/pipeline.py
+++ b/src/taipy/core/pipeline/pipeline.py
@@ -23,7 +23,7 @@
 from ..common._listattributes import _ListAttributes
 from ..common._properties import _Properties
 from ..common._reload import _reload, _self_reload, _self_setter
-from ..common._utils import Subscriber
+from ..common._utils import _Subscriber
 from ..common.alias import PipelineId, TaskId
 from ..data.data_node import DataNode
 from ..exceptions.exceptions import NonExistingTask
@@ -54,7 +54,7 @@ def __init__(
         tasks: Union[List[TaskId], List[Task], List[Union[TaskId, Task]]],
         pipeline_id: PipelineId = None,
         parent_id: Optional[str] = None,
-        subscribers: List[Subscriber] = None,
+        subscribers: List[_Subscriber] = None,
     ):
         self.config_id = _validate_id(config_id)
         self.id: PipelineId = pipeline_id or self._new_id(self.config_id)
@@ -181,11 +181,11 @@ def subscribers(self, val):
 
     def _add_subscriber(self, callback: Callable, params: Optional[List[Any]] = None):
         params = [] if params is None else params
-        self._subscribers.append(Subscriber(callback=callback, params=params))
+        self._subscribers.append(_Subscriber(callback=callback, params=params))
 
     def _remove_subscriber(self, callback: Callable, params: Optional[List[Any]] = None):
         if params is not None:
-            self._subscribers.remove(Subscriber(callback, params))
+            self._subscribers.remove(_Subscriber(callback, params))
         else:
             elem = [x for x in self._subscribers if x.callback == callback]
             if not elem:
diff --git a/src/taipy/core/scenario/_scenario_manager.py b/src/taipy/core/scenario/_scenario_manager.py
index 00004d31b..9bb039ae7 100644
--- a/src/taipy/core/scenario/_scenario_manager.py
+++ b/src/taipy/core/scenario/_scenario_manager.py
@@ -15,6 +15,8 @@
 
 from taipy.config.config import Config
 
+from ._scenario_repository_factory import _ScenarioRepositoryFactory
+from .scenario import Scenario
 from .._manager._manager import _Manager
 from ..common._entity_ids import _EntityIds
 from ..common.alias import ScenarioId
@@ -34,8 +36,6 @@
 from ..job._job_manager_factory import _JobManagerFactory
 from ..job.job import Job
 from ..pipeline._pipeline_manager_factory import _PipelineManagerFactory
-from ._scenario_repository_factory import _ScenarioRepositoryFactory
-from .scenario import Scenario
 
 
 class _ScenarioManager(_Manager[Scenario]):
@@ -91,7 +91,7 @@ def _create(
         creation_date: datetime.datetime = None,
         name: str = None,
     ) -> Scenario:
-        scenario_id = Scenario._new_id(config.id)
+        scenario_id = Scenario._new_id(str(config.id))
         pipelines = [
             _PipelineManagerFactory._build_manager()._get_or_create(p_config, scenario_id)
             for p_config in config.pipeline_configs
@@ -106,7 +106,7 @@ def _create(
         if name:
             props["name"] = name
         scenario = Scenario(
-            config.id,
+            str(config.id),
             pipelines,  # type: ignore
             props,
             scenario_id,
diff --git a/src/taipy/core/scenario/_scenario_repository.py b/src/taipy/core/scenario/_scenario_repository.py
index 47d4c8031..0ab36e7e4 100644
--- a/src/taipy/core/scenario/_scenario_repository.py
+++ b/src/taipy/core/scenario/_scenario_repository.py
@@ -15,7 +15,7 @@
 from .._repository._repository import _AbstractRepository
 from .._repository._repository_adapter import _RepositoryAdapter
 from ..common import _utils
-from ..common._utils import Subscriber
+from ..common._utils import _Subscriber
 from ..common.alias import CycleId, PipelineId
 from ..cycle._cycle_manager_factory import _CycleManagerFactory
 from ..cycle.cycle import Cycle
@@ -57,7 +57,7 @@ def _from_model(self, model: _ScenarioModel) -> Scenario:
             tags=set(model.tags),
             cycle=self.__to_cycle(model.cycle),
             subscribers=[
-                Subscriber(_utils._load_fct(it["fct_module"], it["fct_name"]), it["fct_params"])
+                _Subscriber(_utils._load_fct(it["fct_module"], it["fct_name"]), it["fct_params"])
                 for it in model.subscribers
             ],
         )
diff --git a/src/taipy/core/scenario/scenario.py b/src/taipy/core/scenario/scenario.py
index e6b17270e..dbe61da00 100644
--- a/src/taipy/core/scenario/scenario.py
+++ b/src/taipy/core/scenario/scenario.py
@@ -22,7 +22,7 @@
 from ..common._listattributes import _ListAttributes
 from ..common._properties import _Properties
 from ..common._reload import _reload, _self_reload, _self_setter
-from ..common._utils import Subscriber
+from ..common._utils import _Subscriber
 from ..common.alias import PipelineId, ScenarioId
 from ..cycle.cycle import Cycle
 from ..data.data_node import DataNode
@@ -63,7 +63,7 @@ def __init__(
         creation_date=None,
         is_primary: bool = False,
         cycle: Cycle = None,
-        subscribers: List[Subscriber] = None,
+        subscribers: List[_Subscriber] = None,
         tags: Set[str] = None,
     ):
         self.config_id = _validate_id(config_id)
@@ -198,7 +198,7 @@ def __getattr__(self, attribute_name):
 
     def _add_subscriber(self, callback: Callable, params: Optional[List[Any]] = None):
         params = [] if params is None else params
-        self._subscribers.append(Subscriber(callback=callback, params=params))
+        self._subscribers.append(_Subscriber(callback=callback, params=params))
 
     def _add_tag(self, tag: str):
         self._tags = _reload("scenario", self)._tags
@@ -216,7 +216,7 @@ def has_tag(self, tag: str) -> bool:
 
     def _remove_subscriber(self, callback: Callable, params: Optional[List[Any]] = None):
         if params is not None:
-            self._subscribers.remove(Subscriber(callback, params))
+            self._subscribers.remove(_Subscriber(callback, params))
         else:
             elem = [x for x in self._subscribers if x.callback == callback]
             if not elem:
diff --git a/src/taipy/core/task/_task_manager.py b/src/taipy/core/task/_task_manager.py
index 11579d120..e2c6e7e83 100644
--- a/src/taipy/core/task/_task_manager.py
+++ b/src/taipy/core/task/_task_manager.py
@@ -76,7 +76,7 @@ def _bulk_get_or_create(
             else:
                 inputs = [data_nodes[input_config] for input_config in task_config.input_configs]
                 outputs = [data_nodes[output_config] for output_config in task_config.output_configs]
-                task = Task(task_config.id, task_config.function, inputs, outputs, parent_id=parent_id)
+                task = Task(str(task_config.id), task_config.function, inputs, outputs, parent_id=parent_id)
                 cls._set(task)
                 tasks.append(task)
 
diff --git a/tests/core/pipeline/test_pipeline.py b/tests/core/pipeline/test_pipeline.py
index 8922047b8..59700e56f 100644
--- a/tests/core/pipeline/test_pipeline.py
+++ b/tests/core/pipeline/test_pipeline.py
@@ -13,7 +13,7 @@
 
 import pytest
 
-from src.taipy.core.common._utils import Subscriber
+from src.taipy.core.common._utils import _Subscriber
 from src.taipy.core.common.alias import PipelineId, TaskId
 from src.taipy.core.data.data_node import DataNode
 from src.taipy.core.data.in_memory import InMemoryDataNode
@@ -271,7 +271,7 @@ def test_auto_set_and_reload(task):
     assert len(pipeline_1.subscribers) == 2
     assert len(pipeline_2.subscribers) == 2
 
-    pipeline_1.subscribers.remove(Subscriber(print, []))
+    pipeline_1.subscribers.remove(_Subscriber(print, []))
     assert len(pipeline_1.subscribers) == 1
     assert len(pipeline_2.subscribers) == 1
 
diff --git a/tests/core/pipeline/test_pipeline_manager.py b/tests/core/pipeline/test_pipeline_manager.py
index f0b018cfd..ec8300c43 100644
--- a/tests/core/pipeline/test_pipeline_manager.py
+++ b/tests/core/pipeline/test_pipeline_manager.py
@@ -17,7 +17,7 @@
 from src.taipy.core._scheduler._scheduler import _Scheduler
 from src.taipy.core._scheduler._scheduler_factory import _SchedulerFactory
 from src.taipy.core.common import _utils
-from src.taipy.core.common._utils import Subscriber
+from src.taipy.core.common._utils import _Subscriber
 from src.taipy.core.common.alias import PipelineId, TaskId
 from src.taipy.core.config.job_config import JobConfig
 from src.taipy.core.data._data_manager import _DataManager
@@ -492,11 +492,11 @@ def test_pipeline_notification_unsubscribe_multi_param():
 
     pipeline.unsubscribe(notify_multi_param)
     assert len(pipeline.subscribers) == 2
-    assert Subscriber(notify_multi_param, ["foobar", 123, 0]) not in pipeline.subscribers
+    assert _Subscriber(notify_multi_param, ["foobar", 123, 0]) not in pipeline.subscribers
 
     pipeline.unsubscribe(notify_multi_param, ["foobar", 123, 2])
     assert len(pipeline.subscribers) == 1
-    assert Subscriber(notify_multi_param, ["foobar", 123, 2]) not in pipeline.subscribers
+    assert _Subscriber(notify_multi_param, ["foobar", 123, 2]) not in pipeline.subscribers
 
     with pytest.raises(ValueError):
         pipeline.unsubscribe(notify_multi_param, ["foobar", 123, 10000])
diff --git a/tests/core/scenario/test_scenario.py b/tests/core/scenario/test_scenario.py
index 46b1d3aae..f45cf2337 100644
--- a/tests/core/scenario/test_scenario.py
+++ b/tests/core/scenario/test_scenario.py
@@ -14,7 +14,7 @@
 
 import pytest
 
-from src.taipy.core.common._utils import Subscriber
+from src.taipy.core.common._utils import _Subscriber
 from src.taipy.core.common.alias import ScenarioId, TaskId
 from src.taipy.core.cycle._cycle_manager import _CycleManager
 from src.taipy.core.data.in_memory import InMemoryDataNode
@@ -202,7 +202,7 @@ def test_auto_set_and_reload(cycle, current_datetime, pipeline):
     assert scenario_2.is_primary
 
     assert len(scenario_1.subscribers) == 0
-    scenario_1.subscribers.append(Subscriber(print, []))
+    scenario_1.subscribers.append(_Subscriber(print, []))
     assert len(scenario_1.subscribers) == 1
     assert len(scenario_2.subscribers) == 1
 
@@ -210,11 +210,11 @@ def test_auto_set_and_reload(cycle, current_datetime, pipeline):
     assert len(scenario_1.subscribers) == 0
     assert len(scenario_2.subscribers) == 0
 
-    scenario_1.subscribers.extend([Subscriber(print, []), Subscriber(map, [])])
+    scenario_1.subscribers.extend([_Subscriber(print, []), _Subscriber(map, [])])
     assert len(scenario_1.subscribers) == 2
     assert len(scenario_2.subscribers) == 2
 
-    scenario_1.subscribers.remove(Subscriber(print, []))
+    scenario_1.subscribers.remove(_Subscriber(print, []))
     assert len(scenario_1.subscribers) == 1
     assert len(scenario_2.subscribers) == 1
 
diff --git a/tests/core/scenario/test_scenario_manager.py b/tests/core/scenario/test_scenario_manager.py
index abee6cb44..90339349f 100644
--- a/tests/core/scenario/test_scenario_manager.py
+++ b/tests/core/scenario/test_scenario_manager.py
@@ -17,7 +17,7 @@
 from src.taipy.core._scheduler._scheduler import _Scheduler
 from src.taipy.core._scheduler._scheduler_factory import _SchedulerFactory
 from src.taipy.core.common import _utils
-from src.taipy.core.common._utils import Subscriber
+from src.taipy.core.common._utils import _Subscriber
 from src.taipy.core.common.alias import PipelineId, ScenarioId, TaskId
 from src.taipy.core.config.job_config import JobConfig
 from src.taipy.core.cycle._cycle_manager import _CycleManager
@@ -468,12 +468,12 @@ def test_notification_unsubscribe_multi_param():
     # if no params are passed, removes the first occurrence of the subscriber when theres more than one copy
     scenario.unsubscribe(notify_multi_param)
     assert len(scenario.subscribers) == 2
-    assert Subscriber(notify_multi_param, ["foobar", 123, 0]) not in scenario.subscribers
+    assert _Subscriber(notify_multi_param, ["foobar", 123, 0]) not in scenario.subscribers
 
     # If params are passed, find the corresponding pair of callback and params to remove
     scenario.unsubscribe(notify_multi_param, ["foobar", 123, 2])
     assert len(scenario.subscribers) == 1
-    assert Subscriber(notify_multi_param, ["foobar", 123, 2]) not in scenario.subscribers
+    assert _Subscriber(notify_multi_param, ["foobar", 123, 2]) not in scenario.subscribers
 
     # If params are passed but is not on the list of subscribers, throws a ValueErrors
     with pytest.raises(ValueError):