diff --git a/product/ERP5/PropertySheet/PaymentCondition.py b/product/ERP5/PropertySheet/PaymentCondition.py
index 4b93ce2c5e3107d605e33e7515b6e4d5866a4ba5..7ab8d975e06528d998c4fa1d40df3241e45a54e2 100755
--- a/product/ERP5/PropertySheet/PaymentCondition.py
+++ b/product/ERP5/PropertySheet/PaymentCondition.py
@@ -33,14 +33,6 @@ class PaymentCondition:
   """
 
   _properties = (
-        {   'id'          : 'payment_amount',
-            'description' : 'amount',
-            'type'        : 'float',
-            'mode'        : 'w' },
-        {   'id'          : 'payment_ratio',
-            'description' : 'percentage of total amount',
-            'type'        : 'float',
-            'mode'        : 'w' },
         {   'id'          : 'payment_term',
             'description' : 'payment term in a number of days',
             'type'        : 'int',