on 07-09-2008 3:14 PM
Hi All,
When I try to run the forecast in DP in BACKGROUND then I see following message "mixed periodicities in a forecast are not allowed", but when I execute the forecast in foreground it works completely fine with that forecast profile and everything same.
Can anyone suggest the way to handle this???
Best Regards,
Chandan Dubey
Hi Chandan,
This is the standard design in the background.
If you run your forecast in batch you can only use one periodicity and
not mixed periodicities. Per design it is not allowed to
use different periodicities for forecast in mass processing.
In interactive demand planning, the forecast key figure and other key
figures, such as the adjusted past within the past and forecast horizon
are saved independently of the planning horizon of the planning book or
planning view. This means in particular that the forecast also saves
results outside of the planning horizon for the planning book or
planning view.For performance reasons, however, the horizon of the
planning book must be greater than the horizons in the forecast profile
in the background processing.It is sufficient therefore if the horizon
of the planning book in greater than or equal to the forecast horizon.In
this case, the forecast results are saved but the adjusted past or the
expost forecast cannot be saved.Therefore, a warning message indicating
that the horizon of the planning book does not contain the past period
for the forecast is issued here.In addition, note that for performance
reasons the period units of the planning book and forecast profile must
be identical in the background processing.This is directly due to the
fact that you are not allowed to you use planning books with mixed
period units in the background processing.These restrictions do not
exist in the interactive planning.
I hope this helps.
Regards,
Tibor
Furthermore, note that data is not saved in lines or areas that are not
ready for input in the background processing.Therefore if, for example,
you want to save the adjusted past, then the past horizon for the
planning book must be ready for input.
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note that there are certain "observed" discrpencies between the results of forecast in foregroud and background with the same periodcity. but running a forecast in background is more reliable as the error messages are enunciated in entireity unlike in foreground. be very cautious with automodel 2. it give wrong message .. esp of insufficient history. (even though i had 36 periods) when run in foreground.looks like undocumented and unexplained.
Regards,
Loknath
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