Hello, you do not need to set up deduplication in GA because server-side GA sends requests only from the server.
While if you choose a hybrid approach for Facebook (share the same events from both the browser and the server), then deduplication is required. Redirecting...
You may choose to use only server tracking on FB, then you won’t need to set up deduplication.
I close the topic becasue I found the solution.
I was wrong. When I create a TAG in the WEB side container I send the hit only to the server and not to Google Analytics.
Therefore there is no risk of duplication