Deploy (grey)
Screen: Deploy.
What it is
The Deploy button when it is off: some references need attention, or the project is still identifying devices.
What to enter
Nothing. Fix what the card lists.
What it changes
Nothing has been deployed.
House and app: this control writes nothing to the project by itself, so nothing changes in the house or the app from it alone.
If it goes wrong
The card lists each reference that points at something gone. Fix it in the Rooms step.