So reading by reading this little page, first I thought, I just have to add the following line to my gtag script and everything gonna be just fine:
gtag('config', '<GA_TRACKING_ID>', { 'anonymize_ip': true });
But today I realized that, maybe I didn't understand it right, and what I did, it's just plain stupid. :)
gtag('config', 'UA-2180247-1');
gtag('config', '<GA_TRACKING_ID>', { 'anonymize_ip': true });
So now I don't know how should the second line look:
gtag('config', '<UA-2180247-1>', { 'anonymize_ip': true });
or
gtag('config', 'UA-2180247-1', { 'anonymize_ip': true });
or there shouldn't be two lines at all, just the one which already contains the anonymize_ip...
Somehow it's not self explanatory for me, because elsewhere in documentation google has examples like this:
gtag('config', 'GA_TRACKING_ID');
gtag('config', '<UA-2180247-1>');
not like this, with these brackets ('<>'). So it's just a misspelling?
I guess i got my answer at the following link: https://smarter-ecommerce.com/blog/en/analytics/implement-gdpr-compliant-ip-anonymization-google-analytics/
I've tested, and i only need one extended line like this
gtag('config', 'UA-2180247-1', { 'anonymize_ip': true });