diff --git a/erpnext/change_log/v5/v5_0_28.md b/erpnext/change_log/v5/v5_0_28.md
new file mode 100644
index 0000000..6ad54e6
--- /dev/null
+++ b/erpnext/change_log/v5/v5_0_28.md
@@ -0,0 +1 @@
+- Open notification of Sales Order and Purchase Order based on whether Invoice is created against them. For eg. If a Sales Order is not Invoiced, it will be considered as open. Previously it was considered open if Delivery Note was created against Sales Order.
diff --git a/erpnext/startup/notifications.py b/erpnext/startup/notifications.py
index e847cfa..4190f2d 100644
--- a/erpnext/startup/notifications.py
+++ b/erpnext/startup/notifications.py
@@ -14,7 +14,7 @@
 			"Contact": {"status": "Open"},
 			"Opportunity": {"status": "Open"},
 			"Quotation": {"docstatus": 0},
-			"Sales Order": { "per_delivered": ("<", 100), "status": ("!=", "Stopped"), "docstatus": ("<", 2) },
+			"Sales Order": { "per_billed": ("<", 100), "status": ("!=", "Stopped"), "docstatus": ("<", 2) },
 			"Journal Entry": {"docstatus": 0},
 			"Sales Invoice": { "outstanding_amount": (">", 0), "docstatus": ("<", 2) },
 			"Purchase Invoice": {"docstatus": 0},
@@ -25,7 +25,7 @@
 			"Delivery Note": {"docstatus": 0},
 			"Stock Entry": {"docstatus": 0},
 			"Material Request": {"docstatus": 0},
-			"Purchase Order": { "per_received": ("<", 100), "status": ("!=", "Stopped"), "docstatus": ("<", 2) },
+			"Purchase Order": { "per_billed": ("<", 100), "status": ("!=", "Stopped"), "docstatus": ("<", 2) },
 			"Production Order": { "status": "In Process" },
 			"BOM": {"docstatus": 0},
 			"Timesheet": {"docstatus": 0},