A. Why these rules exist
A tracker sits between the ad and the page. Google Ads sets requirements for third-party trackers so that people and reviewers can tell where a click is going. Destination transparency protects users and keeps ad review meaningful.
B. The visible next-destination parameter
Where Google's rules require it, the next destination has to be identifiable through the designated URL parameter. A tracking service should follow that parameter, not decide on its own back end to send visitors somewhere unrelated. Confirm the exact parameter name in the official guidelines.
C. Open redirect paths
Every path and intermediate stop in your setup should be open and consistent with the requirements. Extra tracking domains need a clear technical purpose; if a hop has none, remove it.
D. Handling parameters
- Tracker parameters are the ones the tracking service itself reads and writes.
- Advertiser and third-party parameters come from you or other services. Know who owns each name.
- Never silently overwrite a parameter, or add one in a way the rules forbid.
- Encoding: a URL nested inside another must be percent-encoded, otherwise its “?” and “&” are read as part of the outer URL.
Educational example (fictional): Outer: https://hop.example.net/c?to=https%3A%2F%2Fshop.example.com%2Fdeal%3Fcmp%3D42 Decoded: https://shop.example.com/deal?cmp=42
E. Third-party tracker certification
Google may require third-party click tracking services to be certified. Look the provider and the exact service up in the official certified click tracker list in Google Ads Help, and read any conditions attached. A listing does not certify every configuration, and this site shows no certification badges.
F. Subdomains and CNAME
DNS maps names to servers. A CNAME makes a name an alias of another, so a subdomain you own (such as go.example.com) can point at a tracking provider. Google describes how it treats qualifying advertiser subdomains that point to a certified tracking domain; read the current conditions. A CNAME alone gives no certification and no guarantee of compliance.
G. Final URL, tracking template and URL suffix
- Final URL is the landing page.
- Tracking template is the account-level wrapper that sends clicks through a tracking URL.
- URL suffix holds parameters appended to the final URL.
They do different jobs, so configure each one the way the current Google Ads documentation describes.
H. Disapprovals and troubleshooting
Typical triggers are broken redirects, unreachable destinations, invalid parameters, inconsistent destinations and unsupported setups. Fix the configuration itself. Never hide destinations, show reviewers different content, cloak, or try to slip past checks. See Troubleshooting.
I. Where to read the official text
Search Google Ads Help for “third-party click tracking guidelines” and “certified click tracker list”. Always prefer the official page over any summary, including this one.