Z-Wave device 12 ERROR: Failed to setup secu

Hello,
New to the smart home and just tried to pair a Remotec Smart Thermostat - ZTS-500 to my Vera Edge. It paired allright and seems to have the controls in place and I can control the AC from the app, however I have this nagging error in red displayed under the device
Z-Wave device 12 ERROR: Failed to setup secur…
Any idea why and how I can remove it please?