Is that the GE 45631? If so, there should be some existing topics on it. It appears the device is troublesome in getting it to work the way you want, and it’s said to have an addressing issue where it can’t talk to any nodeID greater than 32 (IIRC).
I never could get my GE 45631 to work properly with Vera.
So as a workaround, after making the keypad a secondary controller to Vera (so that the ZWave network info was downloaded to the keypad), I then directly programmed the keypad using the keypad programming instructions. Obviously you cannot get Vera scenes this way, but the keypad will be functional to some extent at least.