fix patch, reload doc
diff --git a/erpnext/patches/v10_0/item_barcode_childtable_migrate.py b/erpnext/patches/v10_0/item_barcode_childtable_migrate.py
index 4194c87..47aca4c 100644
--- a/erpnext/patches/v10_0/item_barcode_childtable_migrate.py
+++ b/erpnext/patches/v10_0/item_barcode_childtable_migrate.py
@@ -8,7 +8,8 @@
 
 def execute():
     items_barcode = frappe.db.sql("SELECT name, barcode FROM tabItem WHERE barcode IS NOT NULL", as_dict=1)
-
+    frappe.reload_doc("stock", "doctype", "item")
+    
     for item in items_barcode:
         doc = frappe.get_doc("Item", item.get("name"))
         if item.get("barcode"):