3789443 - SAC: Comments are not supported on Totals

User tried to add data point comment on Totals' cell, however, "Comments are not supported on Totals" pops up while you hover on the "Add Data Point Comment" in the menu.

SAP Analytic Cloud 

1. Right click on the cells on totals rows
2. Hover on the "Add Data Point Comment"

For native DPC, Totals is not supported from the start as Totals in SAC native table is a front-end calculation which does not exist in the master data(dimensions), the commenting in the backend can't handle front-end calculation. 
Thus data point comment is not supported on Totals. 

1. Native DPC on Totals is a limitation, which is explicitly stated in UI. 
2. Please also note: For BW-live scenario, the data point comment on Totals is supported. Since it leverages BW Document Store which supports totals. 

1. If you need a special request for comment on totals, please create an influence page. So our developer can understand your business logic/needs behind this request. 
2. Online help: Add Dimension Comments to Tables

DPC Comments are not supported on Totals pops up while you hover Add Data Point Comment SAC , KBA , LOD-ANA-PL-DPC , Data Point and Dimension Commenting , LOD-ANA-CMT , SAC collaboration, commenting , Problem