[minor] [fix]
diff --git a/utilities/transaction_base.py b/utilities/transaction_base.py
index db5cc07..cbcd488 100644
--- a/utilities/transaction_base.py
+++ b/utilities/transaction_base.py
@@ -76,7 +76,8 @@
 		
 		# fields prepended with default in Customer doctype
 		for f in ['sales_partner', 'commission_rate', 'currency', 'price_list']:
-			out[f] = customer.fields.get("default_" + f)
+			if customer.fields.get("default_" + f):
+				out[f] = customer.fields.get("default_" + f)
 			
 		return out