What are these question marks in my code?


#1

Quite often following a power cut, I have to re add a couple of wall dimmers switches. This time I noticed an option on HE to replace an existing device, which I did and it seemed successful. I.e they appeared on the HE dashboard, and within WC without having to re add.
However, when the code section attached ran, the switches didnt turn on. I turned them on manually, and later another piston which turns them off, worked fine.

I resaved the piston and today it worked fine. However, I notices the ? after the command for these two devices, and wondered why? It’s not present on the next device further down.