diff --git a/erpnext/utilities/transaction_base.py b/erpnext/utilities/transaction_base.py
index dd071c0b717..e49660f33c0 100644
--- a/erpnext/utilities/transaction_base.py
+++ b/erpnext/utilities/transaction_base.py
@@ -547,7 +547,9 @@ class TransactionBase(StatusUpdater):
 		from erpnext.stock.get_item_details import apply_price_list
 
 		args = {
-			"items": [x.as_dict() for x in self.items],
+			# pass child_docname so the maintain-same-rate lock in apply_price_list can
+			# match each row, consistent with the desk (JS) callers
+			"items": [{**x.as_dict(), "child_docname": x.name} for x in self.items],
 			"customer": self.customer or self.party_name,
 			"quotation_to": self.quotation_to,
 			"customer_group": self.customer_group,