fix(test): use unique item in sales order.
diff --git a/erpnext/stock/doctype/delivery_note/test_delivery_note.py b/erpnext/stock/doctype/delivery_note/test_delivery_note.py
index e55bdef..c74b570 100644
--- a/erpnext/stock/doctype/delivery_note/test_delivery_note.py
+++ b/erpnext/stock/doctype/delivery_note/test_delivery_note.py
@@ -1071,10 +1071,13 @@
item = make_item()
- so = make_sales_order(items=[{"item_code": item.name}])
+ so = make_sales_order(item_code=item.name)
soi = so.items[0]
+ # Make qty avl for test.
+ make_stock_entry(item_code=item.name, target=soi.warehouse, qty=10, basic_rate=100)
+
# Test that item qty has been reserved on submit of sales order.
self.assertEqual(get_reserved_qty(soi.item_code, soi.warehouse), soi.qty)