diff --git a/selling/doctype/installation_note/installation_note.py b/selling/doctype/installation_note/installation_note.py
index ed49aef..63e1bae 100644
--- a/selling/doctype/installation_note/installation_note.py
+++ b/selling/doctype/installation_note/installation_note.py
@@ -52,7 +52,6 @@
 		sales_com_obj = get_obj(dt = 'Sales Common')
 		sales_com_obj.check_active_sales_items(self)
 		sales_com_obj.get_prevdoc_date(self)
-		self.validate_mandatory()
 		self.validate_reference_value()
  
 	def pull_delivery_note_details(self):
diff --git a/selling/doctype/quotation/quotation.py b/selling/doctype/quotation/quotation.py
index efc5412..c474d99 100644
--- a/selling/doctype/quotation/quotation.py
+++ b/selling/doctype/quotation/quotation.py
@@ -158,7 +158,6 @@
 			"Order Confirmed", "Order Lost", "Cancelled"])
 
 		self.validate_fiscal_year()
-		self.validate_mandatory()
 		self.set_last_contact_date()
 		self.validate_order_type()
 		self.validate_for_items()
diff --git a/stock/doctype/delivery_note/delivery_note.py b/stock/doctype/delivery_note/delivery_note.py
index d9b1bd2..fd74976 100644
--- a/stock/doctype/delivery_note/delivery_note.py
+++ b/stock/doctype/delivery_note/delivery_note.py
@@ -124,7 +124,6 @@
 		sales_com_obj.check_stop_sales_order(self)
 		sales_com_obj.check_active_sales_items(self)
 		sales_com_obj.get_prevdoc_date(self)
-		self.validate_mandatory()
 		self.validate_reference_value()
 		self.validate_for_items()
 		self.validate_warehouse()