Assuming you are using Ethayer’s Lock Manager you need to use the Keypad Module to define the Keypad. User pin codes for the Iris Keypad must be 4 digits.
Use the keypad DTH at miriad/Centralite-Keypad/master, or you may get it at this link: https://raw.githubusercontent.com/miriad/Centralite-Keypad/master/devicetypes/mitchpond/centralite-keypad.src/centralite-keypad.groovy
Along with these two SmartApps
This should get you up and running. I’m using this exact setup with an Xfinity/Centralite Keypad.