Hello Giri
I understand you want to know whether Statistical Forecast which was generated interactively gets overwritten by the background job if none of the Control Parameters are selected in Activity.
---> My Answer is Yes, it will get overwritten. (You may want to run quick test yourself)
To prevent this I have following suggestion:
( 1 ) Use following step to add below parameter into your user profile: System Menu --> User profile --> Own Data --> Parameters tab and add the following:
/SAPAPO/FCST_GUIDS and Parameter value = X
OR
You can use Tcode : SU3 -> Go to Parameter Tab -> to add the parameter.
This will help in assigning the generated selection profile to the selection id in interactive planning book. So user can update the forecast parameters as they want without overwriting the forecast profile as it will create new forecast profile. (GUID based)
( 2 ) Then Go to Interactive Demand Planning --> Settings --> Forecast Profile --> Assignments --> Select either
"Save assignment with unique forecast profile" (referring this as Option-A)
OR
"Save assignment of selection for forecast profile" (referring this as Option-B)
For your scenario, both these option work fine.
Note - Forecast profile can get assigned to you selection PROVIDED you have Selection ID for your selection. You can see selection using "Display selections" option in Tcode: /SAPAPO/SDP_SEL. Check whether you have selection ID for your selection.
( 3 ) After you run the Statistical Forecast for your selection, You should be able to see Forecast profile assignment for your selection using Tcode: /SAPAPO/MSDP_FCST2.
Basically system assigns the forecast profile to your selection with a unique name(GUID profile if Option-A above). This has some advantage and disadvantage. You will get information on pros/cons in SAP F1 Help as well.
( 4 ) Below point is completely optional, it has no links to your problem. But it is helpful while running Statistical Forecast interactively in Planning Book.You can below parameter using Tcode: SU3 -> Go to Parameter Tab.
/SAPAPO/FCST_GREEN = P (This will take care - Forecast not Saved When Green Back Arrow Is Chosen)
Hope this will help you.
Thank you
Satish Waghmare