I have made two custom dimensions in Google analytics (Author & Category (I put the scope type on SESSION)). But after collecting data I can see that the result is based on 77% of total sessions. Why is that? How can I change that to 100%? Is it related to the scope type I have chosen? should it be Hit? what else should I check? Is it related to the Tag Manager account?
I am totally lost on it, any help would be appreciated.
my main problem is when I want to see the session of landing pages I see different sessions with and without a custom dimension.
This is how I see my landing pages: which shows 100% of the session enter image description here
And here is when I add a custom dimension to the landing pages: which shows a lower number of sessions and I believe that is because of 77% of sessions for custom dimension. enter image description here
So, why there are differences between sessions when I add a custom dimension?