i want to make an insights API Call based on a campaign id with a breakdown on product_id:
/{campaign_id}/insights?fields=clicks,ad_id,adset_id,campaign_id,
So I resolved this question by myself.
For a huge load of Data from Facebook Insights e.g. with a breakdown on product_id I had to use an Async Request on Facebook:
Instead of a GET Request I made a POST request on my query. In the answer I found a Report ID on which I could make a GET request. Facebook then tells the status of the report. After the completion of the report I queried my first POST request as a GET request on the Report ID and finally got my results.