diff --git a/api/core/app/entities/queue_entities.py b/api/core/app/entities/queue_entities.py
index d663dbb17..db0297c35 100644
--- a/api/core/app/entities/queue_entities.py
+++ b/api/core/app/entities/queue_entities.py
@@ -118,7 +118,7 @@ class QueueIterationNextEvent(AppQueueEvent):
     parent_parallel_start_node_id: Optional[str] = None
     """parent parallel start node id if node is in parallel"""
     parallel_mode_run_id: Optional[str] = None
-    """iteratoin run in parallel mode run id"""
+    """iteration run in parallel mode run id"""
     node_run_index: int
     output: Optional[Any] = None  # output for the current iteration
     duration: Optional[float] = None
@@ -201,7 +201,7 @@ class QueueLoopNextEvent(AppQueueEvent):
     parent_parallel_start_node_id: Optional[str] = None
     """parent parallel start node id if node is in parallel"""
     parallel_mode_run_id: Optional[str] = None
-    """iteratoin run in parallel mode run id"""
+    """iteration run in parallel mode run id"""
     node_run_index: int
     output: Optional[Any] = None  # output for the current loop
     duration: Optional[float] = None
@@ -382,7 +382,7 @@ class QueueNodeStartedEvent(AppQueueEvent):
     """loop id if node is in loop"""
     start_at: datetime
     parallel_mode_run_id: Optional[str] = None
-    """iteratoin run in parallel mode run id"""
+    """iteration run in parallel mode run id"""
     agent_strategy: Optional[AgentNodeStrategyInit] = None
 
 
diff --git a/api/core/app/task_pipeline/exc.py b/api/core/app/task_pipeline/exc.py
index df6277697..d88caa987 100644
--- a/api/core/app/task_pipeline/exc.py
+++ b/api/core/app/task_pipeline/exc.py
@@ -1,8 +1,8 @@
-class TaskPipilineError(ValueError):
+class TaskPipelineError(ValueError):
     pass
 
 
-class RecordNotFoundError(TaskPipilineError):
+class RecordNotFoundError(TaskPipelineError):
     def __init__(self, record_name: str, record_id: str):
         super().__init__(f"{record_name} with id {record_id} not found")
 
diff --git a/api/core/workflow/graph_engine/entities/event.py b/api/core/workflow/graph_engine/entities/event.py
index e57e9e4d6..6e72f8b15 100644
--- a/api/core/workflow/graph_engine/entities/event.py
+++ b/api/core/workflow/graph_engine/entities/event.py
@@ -166,7 +166,7 @@ class BaseIterationEvent(GraphEngineEvent):
     parent_parallel_start_node_id: Optional[str] = None
     """parent parallel start node id if node is in parallel"""
     parallel_mode_run_id: Optional[str] = None
-    """iteratoin run in parallel mode run id"""
+    """iteration run in parallel mode run id"""
 
 
 class IterationRunStartedEvent(BaseIterationEvent):