Behavioral modeling is only available for GA4 if:
– Consent mode is enabled across all pages of your site
– Consent mode for web pages must be implemented so that tags are loaded before the consent dialog appears, and Google tags load in all cases, not only if the user consents (advanced implementation).
– The property collects at least 1,000 events per day with analytics_storage=’denied’ for at least 7 days.
– The property has at least 1,000 daily users sending events with analytics_storage=’granted’ for at least 7 of the previous 28 days.
Note, that it may take more than 7 days of meeting the data threshold within those 28 days to train the model successfully; however, it’s possible that even the additional data won’t be sufficient for Analytics to train the model…
