chore: fix flakiness `test_sales_order_partial_advance_payment`
diff --git a/erpnext/selling/doctype/sales_order/test_sales_order.py b/erpnext/selling/doctype/sales_order/test_sales_order.py
index 83689a2..d8b5878 100644
--- a/erpnext/selling/doctype/sales_order/test_sales_order.py
+++ b/erpnext/selling/doctype/sales_order/test_sales_order.py
@@ -1784,10 +1784,10 @@
 		si.submit()
 		pe.load_from_db()
 
-		self.assertEqual(pe.references[0].reference_name, si.name)
-		self.assertEqual(pe.references[0].allocated_amount, 200)
-		self.assertEqual(pe.references[1].reference_name, so.name)
-		self.assertEqual(pe.references[1].allocated_amount, 300)
+		self.assertEqual(pe.references[0].reference_name, so.name)
+		self.assertEqual(pe.references[0].allocated_amount, 300)
+		self.assertEqual(pe.references[1].reference_name, si.name)
+		self.assertEqual(pe.references[1].allocated_amount, 200)
 
 	def test_delivered_item_material_request(self):
 		"SO -> MR (Manufacture) -> WO. Test if WO Qty is updated in SO."