public function accountPv(\Magento\Sales\Api\Data\OrderInterface $order)
    {
        /* sale state validation should be performed before */
        $orderId = $order->getEntityId();
        /* update record state in the registry */
        $this->updateDatePaid($orderId);
        /* ... then transfer PV to the customer account */
        $req = new \Praxigento\Pv\Api\Service\Sale\Account\Pv\Request();
        $req->setSaleOrderId($orderId);
        $this->srvPvAccount->exec($req);
    }