diff --git a/erpnext/accounts/services/child_item_update.py b/erpnext/accounts/services/child_item_update.py
index 99b6b186116..61528e42e28 100644
--- a/erpnext/accounts/services/child_item_update.py
+++ b/erpnext/accounts/services/child_item_update.py
@@ -314,7 +314,7 @@ class ChildItemUpdater:
 
 @frappe.whitelist()
 def update_child_qty_rate(
-	parent_doctype: str, trans_items: str, parent_doctype_name: str, child_docname: str = "items"
+	parent_doctype: str, trans_items: str | list, parent_doctype_name: str, child_docname: str = "items"
 ) -> None:
 	ChildItemUpdater(parent_doctype, parent_doctype_name, child_docname).update(trans_items)