Not Found errors
If the telemetry_id is missing from the lookup request, or we cannot find it in our records, we will return a 404 telemetry_id_not_found error.
Not Found results in DFP API
When you receive a 404 in the Fingerprint lookup response, we recommend blocking the request from proceeding. A missing or invalid telemetry ID could be a sign of an attacker trying to bypass DFP protections by generating fake telemetry IDs or not passing them into requests.
Not Found results in DFP Protected Auth
When DFP Protected Auth is enabled in Enforcement mode and the telemetry_id is missing or not found, our SDK will always prevent the user's request from proceeding.