diff --git a/erpnext/stock/doctype/stock_reservation_entry/stock_reservation_entry.py b/erpnext/stock/doctype/stock_reservation_entry/stock_reservation_entry.py
index 6fa410e50e3..4ad98f4efa7 100644
--- a/erpnext/stock/doctype/stock_reservation_entry/stock_reservation_entry.py
+++ b/erpnext/stock/doctype/stock_reservation_entry/stock_reservation_entry.py
@@ -1170,7 +1170,7 @@ class StockReservation:
 
 			self.available_qty_to_reserve = self.get_available_qty_to_reserve(item_code, warehouse)
 			if not self.available_qty_to_reserve:
-				self.throw_stock_not_exists_error(item.idx, item_code, warehouse)
+				self.throw_stock_not_exists_error(item.get("idx"), item_code, warehouse)
 
 			self.qty_to_be_reserved = (
 				qty if self.available_qty_to_reserve >= qty else self.available_qty_to_reserve
@@ -1230,13 +1230,16 @@ class StockReservation:
 			)
 
 	def throw_stock_not_exists_error(self, idx, item_code, warehouse):
-		frappe.msgprint(
-			_("Row #{0}: Stock not available to reserve for the Item {1} in Warehouse {2}.").format(
+		if idx:
+			msg = _("Row #{0}: Stock not available to reserve for the Item {1} in Warehouse {2}.").format(
 				idx, frappe.bold(item_code), frappe.bold(warehouse)
-			),
-			title=_("Stock Reservation"),
-			indicator="orange",
-		)
+			)
+		else:
+			msg = _("Stock not available to reserve for the Item {0} in Warehouse {1}.").format(
+				frappe.bold(item_code), frappe.bold(warehouse)
+			)
+
+		frappe.msgprint(msg, title=_("Stock Reservation"), indicator="orange")
 
 	def get_available_qty_to_reserve(self, item_code, warehouse, ignore_sre=None):
 		available_qty = get_stock_balance(item_code, warehouse)