diff --git a/src/modules/item-related/item/domain/usecases/managers/update-item.manager.ts b/src/modules/item-related/item/domain/usecases/managers/update-item.manager.ts
index 105ada2..2ece8e7 100644
--- a/src/modules/item-related/item/domain/usecases/managers/update-item.manager.ts
+++ b/src/modules/item-related/item/domain/usecases/managers/update-item.manager.ts
@@ -59,12 +59,18 @@ export class UpdateItemManager extends BaseUpdateManager<ItemEntity> {
 
   get uniqueColumns(): columnUniques[] {
     const timeGroupId = this.data.time_group_id ?? this.data.time_group?.id;
-    return [
-      {
-        column: 'name',
-        query: `((${this.tableName}.time_group_id Is Null OR ${this.tableName}.time_group_id = '${timeGroupId}'))`,
-      },
-    ];
+    return timeGroupId != null
+      ? [
+          {
+            column: 'name',
+            query: `((${this.tableName}.time_group_id Is Null OR ${this.tableName}.time_group_id = '${timeGroupId}'))`,
+          },
+        ]
+      : [
+          {
+            column: 'name',
+          },
+        ];
   }
 
   get entityTarget(): any {