If you have a failed pairing it can create a device known as a ghost. these are defined as having nothing in the routing column on the z-wave details page. They can and will wreak havoc on your mesh. If you have a failed pairing STOP!! Check your z-wave details page for a ghost, remove it. Factory reset the device and try again. Rinse and repeat. A lot of gotchas can be avoided if you look at this thread.
