diff --git a/server/coordinator/procedure/manager_impl.go b/server/coordinator/procedure/manager_impl.go
index ff37a82c..d60437d1 100644
--- a/server/coordinator/procedure/manager_impl.go
+++ b/server/coordinator/procedure/manager_impl.go
@@ -75,6 +75,7 @@ func (m *ManagerImpl) Stop(ctx context.Context) error {
 	return nil
 }
 
+// TODO: Filter duplicate submitted Procedure.
 func (m *ManagerImpl) Submit(_ context.Context, procedure Procedure) error {
 	if err := m.waitingProcedures.Push(procedure, 0); err != nil {
 		return err
diff --git a/server/coordinator/procedure/operation/transferleader/batch_transfer_leader.go b/server/coordinator/procedure/operation/transferleader/batch_transfer_leader.go
index 4aa4f54f..791ece36 100644
--- a/server/coordinator/procedure/operation/transferleader/batch_transfer_leader.go
+++ b/server/coordinator/procedure/operation/transferleader/batch_transfer_leader.go
@@ -63,7 +63,7 @@ func buildBatchRelatedVersionInfo(batch []procedure.Procedure) (procedure.Relate
 		for shardID, version := range p.RelatedVersionInfo().ShardWithVersion {
 			if resultVersion, exists := result.ShardWithVersion[shardID]; exists {
 				if version != resultVersion {
-					return procedure.RelatedVersionInfo{}, errors.WithMessage(procedure.ErrMergeBatchProcedure, "procedure shardVersion in the same batch is inconsistent")
+					return procedure.RelatedVersionInfo{}, errors.WithMessage(procedure.ErrMergeBatchProcedure, fmt.Sprintf("procedure shardVersion in the same batch is inconsistent, shardID: %d, expetcdShardVersion: %d, shardVersion: %d", shardID, version, resultVersion))
 				}
 			} else {
 				result.ShardWithVersion[shardID] = version
diff --git a/server/coordinator/scheduler/assign_shard_scheduler.go b/server/coordinator/scheduler/assign_shard_scheduler.go
index 1856a643..e609fc8e 100644
--- a/server/coordinator/scheduler/assign_shard_scheduler.go
+++ b/server/coordinator/scheduler/assign_shard_scheduler.go
@@ -55,7 +55,7 @@ func (a AssignShardScheduler) Schedule(ctx context.Context, clusterSnapshot meta
 		}
 
 		procedures = append(procedures, p)
-		reasons.WriteString(fmt.Sprintf("the shard:%d is not assigned to any node, try to assign it to node:%s", shardView.ShardID, newLeaderNode.Node.Name))
+		reasons.WriteString(fmt.Sprintf("the shard is not assigned to any node, try to assign it to node, shardID:%d , node:%s. ", shardView.ShardID, newLeaderNode.Node.Name))
 	}
 
 	if len(procedures) == 0 {
diff --git a/server/coordinator/scheduler/rebalanced_shard_scheduler.go b/server/coordinator/scheduler/rebalanced_shard_scheduler.go
index c4095747..dbe7dda9 100644
--- a/server/coordinator/scheduler/rebalanced_shard_scheduler.go
+++ b/server/coordinator/scheduler/rebalanced_shard_scheduler.go
@@ -53,7 +53,7 @@ func (r RebalancedShardScheduler) Schedule(ctx context.Context, clusterSnapshot
 				return ScheduleResult{}, err
 			}
 			procedures = append(procedures, p)
-			reasons.WriteString(fmt.Sprintf("the shard:%d on the node:%s does not meet the balance requirements,it should be assigned to node:%s \n", shardNode.ID, shardNode.NodeName, node.Node.Name))
+			reasons.WriteString(fmt.Sprintf("the shard:%d on the node:%s does not meet the balance requirements,it should be assigned to node:%s. ", shardNode.ID, shardNode.NodeName, node.Node.Name))
 		}
 	}
 
diff --git a/server/coordinator/scheduler/scheduler_manager.go b/server/coordinator/scheduler/scheduler_manager.go
index 833d48a3..c3312c69 100644
--- a/server/coordinator/scheduler/scheduler_manager.go
+++ b/server/coordinator/scheduler/scheduler_manager.go
@@ -213,16 +213,16 @@ func (m *ManagerImpl) ListScheduler() []Scheduler {
 
 func (m *ManagerImpl) Scheduler(ctx context.Context, clusterSnapshot metadata.Snapshot) []ScheduleResult {
 	// TODO: Every scheduler should run in an independent goroutine.
-	allResults := make([]ScheduleResult, 0, len(m.registerSchedulers))
+	results := make([]ScheduleResult, 0, len(m.registerSchedulers))
 	for _, scheduler := range m.registerSchedulers {
 		result, err := scheduler.Schedule(ctx, clusterSnapshot)
 		if err != nil {
 			m.logger.Error("scheduler failed", zap.Error(err))
 			continue
 		}
-		allResults = append(allResults, result)
+		results = append(results, result)
 	}
-	return allResults
+	return results
 }
 
 func (m *ManagerImpl) UpdateEnableSchedule(_ context.Context, enableSchedule bool) {
diff --git a/server/coordinator/scheduler/static_topology_shard_scheduler.go b/server/coordinator/scheduler/static_topology_shard_scheduler.go
index 2b9105e8..d8375e51 100644
--- a/server/coordinator/scheduler/static_topology_shard_scheduler.go
+++ b/server/coordinator/scheduler/static_topology_shard_scheduler.go
@@ -53,7 +53,7 @@ func (s *StaticTopologyShardScheduler) Schedule(ctx context.Context, clusterSnap
 				return ScheduleResult{}, err
 			}
 			procedures = append(procedures, p)
-			reasons.WriteString(fmt.Sprintf("Cluster initialization, shard:%d is assigned to node:%s \n", shardView.ShardID, newLeaderNode.Node.Name))
+			reasons.WriteString(fmt.Sprintf("Cluster initialization, shard:%d is assigned to node:%s. ", shardView.ShardID, newLeaderNode.Node.Name))
 		}
 	case storage.ClusterStateStable:
 		for i := 0; i < len(clusterSnapshot.Topology.ClusterView.ShardNodes); i++ {
@@ -74,7 +74,7 @@ func (s *StaticTopologyShardScheduler) Schedule(ctx context.Context, clusterSnap
 					return ScheduleResult{}, err
 				}
 				procedures = append(procedures, p)
-				reasons.WriteString(fmt.Sprintf("Cluster initialization, shard:%d is assigned to node:%s \n", shardNode.ID, node.Node.Name))
+				reasons.WriteString(fmt.Sprintf("Cluster initialization, shard:%d is assigned to node:%s. ", shardNode.ID, node.Node.Name))
 			}
 		}
 	}