Thanks for answering my post. Interesting, all of my Schlage locks have the enroll button and are Z-wave Plus, and I have been using them with my ISY994i ZW+ IR PRO for years now. I have increased device interview time to 1 minute and changed communication speed to 30 from default of 15. Lock has been factory reset. Start the add Z-wave device, press the enroll button on the lock, I have entered the secure code (located of the back of the lock) when prompted and I receive a prompt to verify the DSK for my device, I verify the popup, the node in the EISY is "Entry Control". I know this has to be something simpIe but it is escaping me, I am including files . . .