If the ActivWall is not interactive on either the left or right hand side of the surface, calibration performed during installation will fail. The rest of the ActivWall surface will be interactive. 

Follow the ActivWall Installation Guide on the ActivWall support page, to ensure that the ActivWall's camera module is centred correctly, and is not pointing towards one side of the ActivWall.

Refer to article 1543 to ensure that the camera is working properly, and can detect the whole surface of the ActivWall.