Hello Christopher
Additionally please refer this old thread
Forecasting interactively and background in DP
In Planning Book, Goto Settings => Forecast Profile => Assignments: There are three options available - 1) Save assignment of selection for forecast profile - This allows users to save changes to original forecast profile-- this is definitely not what we want. 2) Save assignment with unique forecast profile - (this allows for the planner to fine tune a model but then save it to a unique GUID instead of over-writing the original profile itself. DP Planner are expected to use this option. 3) Do not save assignment and forecast profiles - This also allows users to over-write the original forecast profile settings without saving the assignment -- again which is not what we want. Additionally if this /SAPAPO/FCST_GUIDS parameter is set to “X” then it will result into system saving any forecast profile changes as a unique forecast profile(GUID based) – as required by us. Also when generating the forecasting (using option#2 above )interactively, it is important to use same planning levels(selection id) as defined in aggregation levels in background job.
Hope this will help.