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GrowthBook Users

*SRM on redirect test*. *Setup via GTM*
Hi team, I've setup growthbooks via Google tag manager and we're running a URL redirect test on our webflow page.

I'm getting an SRM warning. Reading your <https://docs.growthbook.io/app/url-redirects#:~:text=Sample%20Ratio%20Mismatch%20(SRM)%20Warnings,split%20configured%20for%20the%20experiment.|docs> — it mentions that "_If you are using our HTML Script Tag, this is automatically handled for GA4 and GTM tracking calls"._ I'm using the HTML script tag via GTM and still getting the warning — is there anything else I can do here apart from using the edge worker SDK?

so GTM is often quite late to load, and not idea for redirect tests- if you are okay with this, and want to just address the SRM errors

That'd be great thanks - I'd like to try the script<@U01T6HCHD0A>

<https://gist.github.com/Auz/743dcb8d7aff0acf585e51fbbd7ff1ed>

is overrides how the event tracking works for experiments

and then fires the event on the initial page, but then also on the redirected page, incase the first event can't finish in time

on GrowthBook, this is deduped in cased it happens twice

Thanks <@U01T6HCHD0A> — confirming I replace the HTML script tag for growthbooks SDK in GTM with the above?

be sure to set the value for the key and host

s.dataset.clientKey="KEY";    s.dataset.apiHost="HOST";

image.png

Hey <@U01T6HCHD0A> we've replaced the Growthbooks SDK tag in GTM with the script above and are running an A/A test to validate. Still getting an SRM mismatch (although traffic split has improved from 65%/35% to 60%/40%). Do you have any tips?

Hey <@U01T6HCHD0A> following up on the above.

Is there any other implementation method you recommend? For reference our stack is GA4 (implemented via GTM) and webflow for landing pages