if(use_uniform_pids)
    {
        tx_extra_uniform_payment_id pid;
        //Add payment id after pubkeys
        if(payment_id != nullptr)
        {
            if(payment_id->zero != 0)
            {
                LOG_ERROR("Internal error. Invalid payment id.");
                return false;
            }
        }
        else
            payment_id = &(pid.pid);

            LOG_PRINT_L2("Encrypting payment id " << payment_id->payment_id);

            crypto::public_key view_key_pub = get_destination_view_key_pub(destinations, change_addr);
            if(view_key_pub == null_pkey)
            {
                LOG_ERROR("Destinations have to have exactly one output to support encrypted payment ids");
                return false;
            }


            pid.pid = *payment_id;

            if(!hwdev.encrypt_payment_id(pid.pid, view_key_pub, tx_key))
            {
                LOG_ERROR("Failed to encrypt payment id");
                return false;
            }
            std::cout << "add_payment_id_to_tx_extra: " << pid.pid.payment_id << std::endl;
            if(!add_payment_id_to_tx_extra(tx.extra, &pid))
            {
                LOG_ERROR("Failed to add encrypted payment id to tx extra");
                return false;
            }

            LOG_PRINT_L1("Encrypted payment ID: " << pid.pid.payment_id);
    }