For our analytics configuration we have correctly set up our paid search detection rules, as confirmed by Adobe and an external agency. However, for the past months we have noticed that a lot of visitors coming to the site via Google Ads are not reported as paid search, but rather as direct or referring domains.
Upon investigation with Adobe we have found that if referrer information is not captured for those Google Ads visits, the paid search detection rules are not triggered.
At this moment we have not been able to identify why the referrer information is not captured, and as such we had to implement URL filtering in our marketing channel processing rules to get this traffic under Paid Search.
After implementing this change we've seen that 50% of our Google Ad visits were reported wrongly, with high peaks in Thailand, Argentina, Kazakhstan, Turkey,...