Hi Deepak, that's a pretty common mistake users make in Analytics. This KB article explains everything in detail: Compare sum of line items to report total

Your screenshot crops it, but there's a yellow triangle in the upper right corner of each row that tells you that data is being updated.

Marking as a duplicate of Workspace Table Builder - please show your support there!

Marking as a duplicate of Workspace Table Builder - please show your support there!

Thanks Eileen, here are the correct links:List Variable List Props

If you're using visits as the metric, that would be the number of visits that did not view a product in their session.

Hi everyone! By popular request, here is an aggregated list of labs that occurred during Summit this year, and a link to their respective discussion thread.Adobe Summit 2019 | L721 - Leverage Adobe I/O to Handle Adobe Experience Cloud Events Adobe Summit 2019 | L722 - Get Up, Running, and Integrated...

Here's the latest and definitive answer on the topic: https://medium.com/adobetech/safari-itp-2-1-impact-on-adobe-experience-cloud-customers-9439cecb55ac

ItemId is required, unfortunately. You can do a filter to get the Item ID, though: https://github.com/AdobeDocs/analytics-2.0-apis/blob/a7cff208f309519703fe5bc62327aaddddf7bebc/reporting-guide.md#using-search-parameters  

This page should have everything you need: Adobe Analytics Help | Using best practices when tracking SPA in Adobe Analytics