diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index 6a5914ddbe06..c496782650ae 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -2181,6 +2181,7 @@ def validate_payment_schedule_dates(self):
 			return
 
 		for d in self.get("payment_schedule"):
+			d.validate_from_to_dates("discount_date", "due_date")
 			if self.doctype == "Sales Order" and getdate(d.due_date) < getdate(self.transaction_date):
 				frappe.throw(
 					_("Row {0}: Due Date in the Payment Terms table cannot be before Posting Date").format(