many characteristic with notify

many characteristic with notifyhttps://devzone.nordicsemi.com/f/nordic-q-a/111943/many-characteristic-with-notifyhi,all I Need add many characteristic with notify in one service,and I wish it can send notify to the phone once the phone enable cccd. 1.tx_handles can work,buf rx_handles can not ,it err_code is 0x08 or 0x3401 or 3003,how can i do? below is myen-USTelligent Community 13Sun, 09 Jun 2024 13:57:00 GMTRE: many characteristic with notifyhttps://devzone.nordicsemi.com/thread/487996?ContentTypeID=1Sun, 09 Jun 2024 13:57:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:57bb5775-1aa1-4728-846c-2acc49de831eycp<p>memset(&hvx_params, 0, sizeof(hvx_params));</p> <p>hvx_params.handle = p_nus->tx_handles.value_handle;  // !!!  must change according to right handle<br /> hvx_params.p_data = p_data;<br /> hvx_params.p_len = p_length;<br /> hvx_params.type = BLE_GATT_HVX_NOTIFICATION;</p> <p>return sd_ble_gatts_hvx(conn_handle, &hvx_params);</p><div style="clear:both;"></div>