// unregister session variables used during checkout
      tep_session_unregister('sendto');
      tep_session_unregister('billto');
      tep_session_unregister('shipping');
      tep_session_unregister('payment');
      tep_session_unregister('comments');

      tep_session_unregister('customer_shopping_points');// Points/Rewards Module V2.00
      tep_session_unregister('customer_shopping_points_spending');// Points/Rewards Module V2.00
      tep_session_unregister('customer_referral');// Points/Rewards Module V2.00

      tep_session_unregister('cart_PayPal_IPN_ID');
    
      tep_session_unregister('credit_covers');// CCGV
ligne 538      $order_total_modules->clear_posts();// CCGV

      tep_redirect(tep_href_link(FILENAME_CHECKOUT_SUCCESS, '', 'SSL'));
    }

    function after_process() {
      return false;
    }

    function output_error() {
      return false;
    }