diff --git a/api/core/app/engine_layers/trigger_post_layer.py b/api/core/app/engine_layers/trigger_post_layer.py
index 5b31ec2ae1..1309295b1a 100644
--- a/api/core/app/engine_layers/trigger_post_layer.py
+++ b/api/core/app/engine_layers/trigger_post_layer.py
@@ -11,7 +11,7 @@ from core.workflow.graph_events.graph import GraphRunFailedEvent, GraphRunPaused
 from models.engine import db
 from models.enums import WorkflowTriggerStatus
 from repositories.sqlalchemy_workflow_trigger_log_repository import SQLAlchemyWorkflowTriggerLogRepository
-from tasks.workflow_cfs_scheduler.cfs_scheduler import TriggerWorkflowCFSPlanEntity
+from tasks.workflow_cfs_scheduler.cfs_scheduler import AsyncWorkflowCFSPlanEntity
 
 logger = logging.getLogger(__name__)
 
@@ -29,7 +29,7 @@ class TriggerPostLayer(GraphEngineLayer):
 
     def __init__(
         self,
-        cfs_plan_scheduler_entity: TriggerWorkflowCFSPlanEntity,
+        cfs_plan_scheduler_entity: AsyncWorkflowCFSPlanEntity,
         start_time: datetime,
         trigger_log_id: str,
     ):
diff --git a/api/tasks/async_workflow_tasks.py b/api/tasks/async_workflow_tasks.py
index 5a8274929a..cce0256a42 100644
--- a/api/tasks/async_workflow_tasks.py
+++ b/api/tasks/async_workflow_tasks.py
@@ -30,7 +30,7 @@ from services.workflow.entities import (
     WorkflowScheduleCFSPlanEntity,
     WorkflowTaskData,
 )
-from tasks.workflow_cfs_scheduler.cfs_scheduler import TriggerCFSPlanScheduler, TriggerWorkflowCFSPlanEntity
+from tasks.workflow_cfs_scheduler.cfs_scheduler import AsyncWorkflowCFSPlanEntity, AsyncWorkflowCFSPlanScheduler
 from tasks.workflow_cfs_scheduler.entities import AsyncWorkflowQueue
 
 
@@ -38,14 +38,14 @@ from tasks.workflow_cfs_scheduler.entities import AsyncWorkflowQueue
 def execute_workflow_professional(task_data_dict: dict[str, Any]):
     """Execute workflow for professional tier with highest priority"""
     task_data = WorkflowTaskData.model_validate(task_data_dict)
-    cfs_plan_scheduler_entity = TriggerWorkflowCFSPlanEntity(
+    cfs_plan_scheduler_entity = AsyncWorkflowCFSPlanEntity(
         queue=AsyncWorkflowQueue.PROFESSIONAL_QUEUE,
         schedule_strategy=WorkflowScheduleCFSPlanEntity.Strategy.TimeSlice,
         granularity=dify_config.ASYNC_WORKFLOW_SCHEDULER_GRANULARITY,
     )
     _execute_workflow_common(
         task_data,
-        TriggerCFSPlanScheduler(plan=cfs_plan_scheduler_entity),
+        AsyncWorkflowCFSPlanScheduler(plan=cfs_plan_scheduler_entity),
         cfs_plan_scheduler_entity,
     )
 
@@ -54,14 +54,14 @@ def execute_workflow_professional(task_data_dict: dict[str, Any]):
 def execute_workflow_team(task_data_dict: dict[str, Any]):
     """Execute workflow for team tier"""
     task_data = WorkflowTaskData.model_validate(task_data_dict)
-    cfs_plan_scheduler_entity = TriggerWorkflowCFSPlanEntity(
+    cfs_plan_scheduler_entity = AsyncWorkflowCFSPlanEntity(
         queue=AsyncWorkflowQueue.TEAM_QUEUE,
         schedule_strategy=WorkflowScheduleCFSPlanEntity.Strategy.TimeSlice,
         granularity=dify_config.ASYNC_WORKFLOW_SCHEDULER_GRANULARITY,
     )
     _execute_workflow_common(
         task_data,
-        TriggerCFSPlanScheduler(plan=cfs_plan_scheduler_entity),
+        AsyncWorkflowCFSPlanScheduler(plan=cfs_plan_scheduler_entity),
         cfs_plan_scheduler_entity,
     )
 
@@ -70,22 +70,22 @@ def execute_workflow_team(task_data_dict: dict[str, Any]):
 def execute_workflow_sandbox(task_data_dict: dict[str, Any]):
     """Execute workflow for free tier with lower retry limit"""
     task_data = WorkflowTaskData.model_validate(task_data_dict)
-    cfs_plan_scheduler_entity = TriggerWorkflowCFSPlanEntity(
+    cfs_plan_scheduler_entity = AsyncWorkflowCFSPlanEntity(
         queue=AsyncWorkflowQueue.SANDBOX_QUEUE,
         schedule_strategy=WorkflowScheduleCFSPlanEntity.Strategy.TimeSlice,
         granularity=dify_config.ASYNC_WORKFLOW_SCHEDULER_GRANULARITY,
     )
     _execute_workflow_common(
         task_data,
-        TriggerCFSPlanScheduler(plan=cfs_plan_scheduler_entity),
+        AsyncWorkflowCFSPlanScheduler(plan=cfs_plan_scheduler_entity),
         cfs_plan_scheduler_entity,
     )
 
 
 def _execute_workflow_common(
     task_data: WorkflowTaskData,
-    cfs_plan_scheduler: TriggerCFSPlanScheduler,
-    cfs_plan_scheduler_entity: TriggerWorkflowCFSPlanEntity,
+    cfs_plan_scheduler: AsyncWorkflowCFSPlanScheduler,
+    cfs_plan_scheduler_entity: AsyncWorkflowCFSPlanEntity,
 ):
     """Execute workflow with common logic and trigger log updates."""
 
diff --git a/api/tasks/workflow_cfs_scheduler/cfs_scheduler.py b/api/tasks/workflow_cfs_scheduler/cfs_scheduler.py
index c7a1650d23..218e61f6d9 100644
--- a/api/tasks/workflow_cfs_scheduler/cfs_scheduler.py
+++ b/api/tasks/workflow_cfs_scheduler/cfs_scheduler.py
@@ -3,7 +3,7 @@ from services.workflow.scheduler import CFSPlanScheduler, SchedulerCommand
 from tasks.workflow_cfs_scheduler.entities import AsyncWorkflowQueue
 
 
-class TriggerWorkflowCFSPlanEntity(WorkflowScheduleCFSPlanEntity):
+class AsyncWorkflowCFSPlanEntity(WorkflowScheduleCFSPlanEntity):
     """
     Trigger workflow CFS plan entity.
     """
@@ -11,17 +11,17 @@ class TriggerWorkflowCFSPlanEntity(WorkflowScheduleCFSPlanEntity):
     queue: AsyncWorkflowQueue
 
 
-class TriggerCFSPlanScheduler(CFSPlanScheduler):
+class AsyncWorkflowCFSPlanScheduler(CFSPlanScheduler):
     """
     Trigger workflow CFS plan scheduler.
     """
 
+    plan: AsyncWorkflowCFSPlanEntity
+
     def can_schedule(self) -> SchedulerCommand:
         """
         Check if the workflow can be scheduled.
         """
-        assert isinstance(self.plan, TriggerWorkflowCFSPlanEntity)
-
         if self.plan.queue in [AsyncWorkflowQueue.PROFESSIONAL_QUEUE, AsyncWorkflowQueue.TEAM_QUEUE]:
             """
             permitted all paid users to schedule the workflow any time
@@ -29,5 +29,4 @@ class TriggerCFSPlanScheduler(CFSPlanScheduler):
             return SchedulerCommand.NONE
 
         # FIXME: avoid the sandbox user's workflow at a running state for ever
-
-        return SchedulerCommand.NONE
+        return SchedulerCommand.RESOURCE_LIMIT_REACHED