Keypad is working well here. With the latest version of Home Assistant it is possible to configure the user codes using Configuration --> Z-Wave, select the node. Scan a RFID tag, and it will show under Node User Codes as 0: Enrollment code. Copy this code. Change the code slot to another slot, and paste the HEX values. Only caveat is that if you have a short HEX code, like \x4, the panel will interprent it wrongly. You have to make sure there are always two digits, so make it \x04.
The only thing I would like to know is which RFID tag (which User Code) armed/disarmed the keypad. Does anyone know how to get this information?