diff --git a/Backend/Models/Device.cs b/Backend/Models/Device.cs
index 6f8bad7..9825929 100644
--- a/Backend/Models/Device.cs
+++ b/Backend/Models/Device.cs
@@ -82,7 +82,6 @@ namespace Backend.Models
         public List<DeviceDisaster> Device_disasters { get; set; } //防災類型
         public List<DeviceNode> Device_nodes { get; set; } //設備子節點
 
-        public System.DateTime created_at { get; set; }
         /// <summary>
         /// 前次成功日期；下次重新歸檔日期
         /// </summary>
diff --git a/FrontendWebApi/ApiControllers/BuildController.cs b/FrontendWebApi/ApiControllers/BuildController.cs
index 2d0d5a8..c9482fa 100644
--- a/FrontendWebApi/ApiControllers/BuildController.cs
+++ b/FrontendWebApi/ApiControllers/BuildController.cs
@@ -520,7 +520,7 @@ namespace FrontendWebApi.ApiControllers
                 {
                     if (!string.IsNullOrEmpty(projectName) && projectName.Contains("ibms_dome") && (post.main_system_tag == "S" && post.sub_system_tag == "P"))
                     {
-                        sub_system_guidsql = $@" and (d.device_name_tag = '{post.sub_system_tag}' or d.device_name_tag = 'B')";
+                        sub_system_guidsql = $@" and (d.device_name_tag = '{post.sub_system_tag}' or d.device_name_tag = 'B') and d.device_number not like '%ATS%'";
                         singleSubSql = $"and (di.device_name_tag = '{post.sub_system_tag}' or di.device_name_tag = 'B')";
                     }
                     else
diff --git a/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs b/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs
index ef24e0b..184c25b 100644
--- a/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs
+++ b/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs
@@ -407,11 +407,34 @@ namespace Repository.BackendRepository.Implement
                     {
                         await conn.ExecuteAsync(sb.ToString());
                     }
+
                     stopwatchSection.Stop();
                     await KeepTimeLog("update device_item parent_path", stopwatchSection.ElapsedMilliseconds);
 
                     stopwatch.Stop();
                     await KeepTimeLog("InsertItemFromNiagara", stopwatch.ElapsedMilliseconds);
+
+                    //delete the same point in 
+                    await conn.ExecuteAsync(@"DELETE ini1
+                                FROM import_niagara_item ini1
+                                JOIN (
+                                    SELECT DISTINCT ini1.id
+                                    FROM import_niagara_item ini1
+                                    JOIN import_niagara_item ini2 ON ini1.id != ini2.id 
+                                        AND ini1.device_building_tag = ini2.device_building_tag
+                                        AND ini1.device_system_tag = ini2.device_system_tag
+                                        AND ini1.device_name_tag = ini2.device_name_tag
+                                        AND ini1.device_point_name = ini2.device_point_name
+                                        AND ini1.full_name = ini2.full_name
+                                        AND ini1.parent_path = ini2.parent_path
+                                        AND ini1.is_history = ini2.is_history
+                                    WHERE ini1.id NOT IN (
+                                        SELECT MIN(id)
+                                        FROM import_niagara_item
+                                        GROUP BY device_building_tag, device_system_tag, device_name_tag, device_point_name, full_name
+                                        HAVING COUNT(device_point_name) > 1
+                                    )
+                                ) AS to_delete ON ini1.id = to_delete.id;");
                     #endregion
                 }
                 catch (Exception exception)