diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index de7a7f9..fd38be8 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -1952,7 +1952,7 @@
 			self.remove(item)
 
 	def set_payment_schedule(self):
-		if self.doctype == "Sales Invoice" and self.is_pos:
+		if (self.doctype == "Sales Invoice" and self.is_pos) or self.get("is_opening") == "Yes":
 			self.payment_terms_template = ""
 			return
 
@@ -2135,7 +2135,7 @@
 			)
 
 	def validate_payment_schedule_amount(self):
-		if self.doctype == "Sales Invoice" and self.is_pos:
+		if (self.doctype == "Sales Invoice" and self.is_pos) or self.get("is_opening") == "Yes":
 			return
 
 		party_account_currency = self.get("party_account_currency")