Question: How the amount in the standard DSO function is calculated?

Answer

The DSO formula uses the standard countback methodology, rounded to the nearest full day.
Therefore, the P&L account view is fixed to Periodic and the BS account view Periodic/YTD.
As a dynamic calculation, you will see the same figure no matter which view member is selected..

 

Source: Office Hours 2020-01-31 Partner Enablement