from your tutorial (How to Setup Facebook Conversion API - YouTube) at the minutes 8:00, when you click the button you have a view_item event which is fired on your server.
Where is this view_event coming from? In the tutorial it was never created before. This is why I am a bit confused.
You quickly mention somethign about the fact that the view_item event was created in Google Analytics.
Does it mean that you have already created that specific event in the WEB GTM CONTAINER? or it is in the SERVER GTM CONTAINER?
Every time I need to create a new event, do I have to create it first in Google Analytics in order to see the right varaible name in the Preview mode?