We don’t really cover how to Stream on his forum…
But you can use he Playsation Twitch App to go live
or a PC wiih a capture card, running OBS/XSplit to go live.
https://help.twitch.tv/s/article/how-to-get-and-use-the-ps-app?language=en_US
Embeds use channel name, not ID.
You can get a userID via the Get users endpoint: