Because you've set up your web data stream, your website is already feeding wata to your Google Analytics property. Yo

notice that enhanced measurement is enabled for the web data stream. What happens when this setting is enabled?

Additional events are collected from your website without you needing to change your website's code

Events from your mobile app can be combined with your existing website data

Events can be associated with signed$-$in users to enable cross$-$device reporting

Conversion reporting for the web data stream uses machine learning to distributes credit across channels