What breakdown are you using?  It could be an issue with how you are combining with that dimension?=.

In this scenario wouldn't you the component migration tool?

Natalie, I would expect that (Page Views - Exits) would be closer to the sum of the individuals rows of the time spent dimensions.Time calculations within Adobe Analytics are (time of most recent event - [minus] time of prior event).  If a user loads a page and then exits the site there isn't a seco...

If your website is public facing you could also share it here.  This would make it easier for the community to trouble shoot your issue.

This is a key difference between the Adobe and Google platforms, within GA the presence of a new UTM parameter instantiates a new visit- which is not true in Adobe.

You can use the out of the box dimension of 'Operating System Type' to create your segments.

This is a relatively simple custom metric to create.  Depending on what you need represented the segment could be at the visitor level instead of visit level as shown above.

How large is the gap?  Anything within 0-4 percent is well within industry standards.You will always have a gap due to users on ad blockers or using browsers like Brave.  A gap can also be caused by internal users purchasing (if you have say an internal IP filter).I would initially focus more on set...

It appears you are in the incorrect area for what you are tying to acheive.  The channel logic would be defined in the 'Channel Processing' area.The classification area is more frequently used to set the components of a channel.

Basic functions within Adobe Analytics fall into the categories of 'Row' or 'Table', its imperative to be mindful of which type you are trying to employ.Table Functions versus Row FunctionsA table function is one where the output is the same for every row of the table. A row function is one where th...