Reply To: Troubleshooting Conversion Visibility Issues for Google Ads through Measurement Protocol with GA4

[Mathew]

So the main issue could be trouble in tracking GCLID. If MP isn’t properly handling the GCLID, Google Ads won’t be able to map the conversions you’re trying to input.

A couple ways to debug this could be to look at the GCLID in the network conversion hits in MP and the front-end. If there’s any discrepancy or truncation in the GCLID, it could cause the issue. Another way would be to take your data from GA4 and compare it to BQ. Looking at two different conversion hits made via the front-end and MP could give you some insight.

If you haven’t already, try checking out these avenues. If the GCLID does happen to be malformed in MP, that should tell you wherein lies the problem. And while it could also be another issue like client ids, session ids, etc., those should have been obvious in GA4 or when exploring user sessions in BQ. Hopefully this helps get you on the right path!