Need help for "This entity does not have a unique ID"

Configuration
1

Ill appreciate very much some guide or help creating a unique ID through MQTT or YAML
I’ve looked for instruction, but couldn’t find anything I can understand
I’m trying to make one for my media player Bluesound (=media_player.bluesound_ww)
another one for motion sensor with app IPwebcam (=switch.working_ip_motion_detection)
and one for current temperature from ac connected to HA with ST
again I’ll be great full for good instruction as I am really confused

2

Mostly you can’t, you can only do that if the integration supports it.

Bluesound doesn’t, and MQTT only does if you’re using MQTT Discovery.

3

I’m ready to use MQTT Discovery but I don’t know how

4

The docs cover it, you just have to publish the appropriate MQTT payloads.

5

thanks way above my level