The response message:
The key software is preventing any key from being created for this door. In the settings of the key software, ensure this door is unlocked. You can read more about this error here:
Why this happens:
Just as you can lock a reservation in Mews or mark a space as Out of Order or Out of Service in Mews, some door lock softwares offer a similar functionality when it comes to managing your rooms.
When you see this response message in Mews, it means that you are trying to create a key for a room that has been marked as locked or out of service in your door lock software.
How to resolve:
Unlock the room/door in your door lock software and try to create a key again.