hello! what does the "Multiple Exposures Check" actually mean under the hood? how can i track down what could be causing it?

Hi Jonathan

i see, we load the sdk both in cdn and client side (for visual testing), maybe we have a mismatch there

so if you assign by session id, you'll get users who are exposed to multiple variations if their session expires/changes

i think we simply a cookie for the session id though, but i'll check

Hi Jonathan, sometimes folks run into challenges when using custom IDs with GTM/GA4/BQ. Starting with this section in the docs and continuing for the 2 sections after it is more info about using custom IDs with Google. Could you send me a screenshot or code snippet of how you're generating and setting the ID, and how it's being passed to Google? This would be happening in the GrowthBook-related code within your application, most likely.

hi again @brief-honey-45610! i found that we generated a new ID on every request, a super clear issue that we resolved, but we're still getting it and it's difficult to figure out what's causing the mismatch error we're generating and terminating the error in a fastly cdn edge function and passing it to GB, and then it goes down to the frontend which experiments are viewed and we push those to GA4

Hello @brief-honey-45610, Im a colleague of Jonathan, do you have an update to the question above regarding uuids?