The request is being marked as failed due to the return code specified in the message. The device management protocol in Watson IoT Platform specifically expects to receive back a 202 (accepted) message in response to the initiate device reboot message.

This response indicates that the device has accepted the reboot request. At this point, the request is still in-progress according to the request status in Watson IoT Platform. The request will be marked complete after the device has rebooted, reconnected and send a new "manage" message.

Example message flow:

• IoT Platform publishes initiate message:

  iotdm-1/mgmt/initiate/device/reboot:{"reqId":"d406d02e-1b5b-4e75-a9b7-1325e31c535a"}

• Device responds with accept message:

  iotdevice-1/response:{"rc":202,"reqId":"d406d02e-1b5b-4e75-a9b7-1325e31c535a"}

• Device reboots, comes back online and publishes new manage message:

  iotdevice-1/mgmt/manage:{"d":{"supports":{"deviceActions":true}},"reqId":"e406d02e-1b5b-4e75-a9b7-1325e31c535b"}

Further details on the device management protocol can be found here: https://console.bluemix.net/docs/services/IoT/devices/device_mgmt/requests.html#device-actions-reboot