diff --git a/erpnext/crm/doctype/opportunity/opportunity.py b/erpnext/crm/doctype/opportunity/opportunity.py
index be843a3..55e0efa 100644
--- a/erpnext/crm/doctype/opportunity/opportunity.py
+++ b/erpnext/crm/doctype/opportunity/opportunity.py
@@ -33,6 +33,7 @@
 		self.validate_item_details()
 		self.validate_uom_is_integer("uom", "qty")
 		self.validate_cust_name()
+		self.map_fields()
 
 		if not self.title:
 			self.title = self.customer_name
@@ -43,6 +44,15 @@
 		else:
 			self.calculate_totals()
 
+	def map_fields(self):
+		for field in self.meta.fields:
+			if not self.get(field.fieldname):
+				try:
+					value = frappe.db.get_value(self.opportunity_from, self.party_name, field.fieldname)
+					frappe.db.set(self, field.fieldname, value)
+				except Exception:
+					continue
+
 	def calculate_totals(self):
 		total = base_total = 0
 		for item in self.get('items'):