fix(sales return): validation message fix
diff --git a/erpnext/controllers/sales_and_purchase_return.py b/erpnext/controllers/sales_and_purchase_return.py
index 5e95b9e..8d6d070 100644
--- a/erpnext/controllers/sales_and_purchase_return.py
+++ b/erpnext/controllers/sales_and_purchase_return.py
@@ -139,7 +139,7 @@
 					.format(args.item_code), StockOverReturnError)
 			elif abs(current_stock_qty) > max_returnable_qty:
 				frappe.throw(_("Row # {0}: Cannot return more than {1} for Item {2}")
-					.format(args.idx, reference_qty, args.item_code), StockOverReturnError)
+					.format(args.idx, max_returnable_qty, args.item_code), StockOverReturnError)
 
 def get_ref_item_dict(valid_items, ref_item_row):
 	from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos