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Advertising vendor UUID

Hello! I am trying to advertise two 16-bit uuid's and a 128-bit uuid.  I set up advertising_init as such: 

static void advertising_init(void)
{
    ret_code_t    err_code;
    ble_advertising_init_t init;
   
    memset(&init, 0, sizeof(init));

    init.advdata.name_type          = BLE_ADVDATA_FULL_NAME;
    init.advdata.flags              = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;

    init.advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
    init.advdata.uuids_complete.p_uuids  = m_adv_uuids;
    
    init.srdata.uuids_complete.uuid_cnt = sizeof(m_sr_uuids) / sizeof(m_sr_uuids[0]);
    init.srdata.uuids_complete.p_uuids  = m_sr_uuids;
    
    init.config.ble_adv_fast_enabled  = true;
    init.config.ble_adv_fast_interval = APP_ADV_INTERVAL;
    init.config.ble_adv_fast_timeout  = APP_ADV_TIMEOUT_IN_SECONDS;

    err_code = ble_advertising_init(&m_advertising, &init);
    APP_ERROR_CHECK(err_code);
    
    ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
}

I declared the following structures:

static ble_uuid_t m_adv_uuids[] =                                              
{
    {BLE_UUID_DEVICE_INFORMATION_SERVICE, BLE_UUID_TYPE_BLE},
    {BLE_UUID_BATTERY_SERVICE, BLE_UUID_TYPE_BLE}
};

static ble_uuid_t m_sr_uuids[] = 
{
  {SENS_UUID_SERVICE, BLE_UUID_TYPE_VENDOR_BEGIN}
};

where "SENS_UUID_SERVICE" points to my custom 16-bit UUID.  Currently I'm getting a "NRF_ERROR_INVALID_PARAM" from "sd_ble_uuid_encode."  I set the number of vendor-specific UUID's to 1 in the sdk_config.h file.  What am I doing wrong?

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