diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index ca09f765315..d661bcbf347 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -1200,6 +1200,8 @@ def update_child_qty_rate(parent_doctype, trans_items, parent_doctype_name, chil
 				child_item = set_purchase_order_defaults(parent_doctype, parent_doctype_name, child_docname, d.get("item_code"))
 		else:
 			child_item = frappe.get_doc(parent_doctype + ' Item', d.get("docname"))
+			if flt(child_item.get("rate")) == flt(d.get("rate")) and flt(child_item.get("qty")) == flt(d.get("qty")):
+				continue
 
 		if parent_doctype == "Sales Order" and flt(d.get("qty")) < flt(child_item.delivered_qty):
 			frappe.throw(_("Cannot set quantity less than delivered quantity"))