PP Demand Planning Historical Forecast

Hi,
I am trying to run a forecast in the past to allow me to see the outcome of different forecast models as compared to the actual results (e.g.. Historical period current -2 and forecast period current -1). The job appears to work without an error (Ex Post forecast), but no forecast is generated. Does SAP only allow the generation of forecast data for future periods?
Thanks
Mark

Strictly speaking yes, forecast is meant to, as the name suggests forecast future values. However, when there is sufficient data the system performs what is called an EX-post forecast. The point of the ex-post forecast is to apply the selected model (for future values) to historical values so that the validity of the selected model can be made (I believe this is what you want to do)
Below is a small example. For a given material I performed the forecast for period 06.2007 onwards, but as you can see that system has also done an ex-post forecast (==> applied the forecats model to past values). I have included a picture to highlight what I mean <a href="http://www.renet-web.net/sdn/forecast.jpg">here</a>. The value circled is the forecasted value for a past period.
hope this helps.

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Hell APO DP experts,
We are implementing CBF functionality in demand planning. In /SAPAPO/SDP94 - Interactive Demand Planning, when we try to run forecast we are getting a message:
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Message no. /SAPAPO/MA502
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Hi,
If you are working on SAP APO 4.0/4.1,
Check OSS Note 790517 - No error message "No historical data available".
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Dear Experts ,
I am Exploring differnt Forecast Model , like constant
model, trend model, seasonal model, trend and seasonal model, Croston method
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Hi Raj
Below link will give you entire information on forecasting models, forecasting accuracy technequues etc,:
http://help.sap.com/saphelp_apo/helpdata/en/33/437a37b70cf273e10000009b38f8cf/frameset.htm
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Regards
R. Senthil Mareeswaran.

Can't See Historical Forecast in SPP

Hi
We have loaded the sales order data using a flat file.We were able to load the data into the cube 9ADEMAND (but not into the ODS 9ARAWDAT).
We are also able to see the demand data in the forecasting planning book and even forecast is also getting generated.
The problems which we are facing are
1. Standard Deviation of Demand, MAD etc are all 0.
2. Not able to see Historical Forecast ( tcode /SAPAPO/SPPFCSTTARK) . The error message says " No historical forecast time series can be determined".
Can anybody tell us what could be the problem ?
Thanks in Advance
Mitesh

We are having a similar issue, could you provide the configuration done to the planning profile for recalculation of historical forecast?

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Hi All,
Is there a way to release the forecast in Demand Planning in APO to R/3 Demand Management without passing overwriting the historical buckets in R/3. I have created a special data view that does not contain any historical weeks. However, if we are in week 2 of the month, it overwrites week one of the month in Demand Management with a 0 value when we execute the forecast pass to r/3 job. I don't want to overwrite week one and we actually want to keep the old value there, How can we prevent this from being overwritten?
I have created a data view that does not contain any historical buckets and I am using this in the
Regards,
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Hi,
For releasing from DP to ECC , you have taken care of:
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○ A planning buckets profile with one periodicity only.
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In SAP ECC Demand Management, planned independent requirements are created in the same buckets as those of the data view on which the mass processing job is based.
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Regards
Datta

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I have a BPX question for APO DP process owners, consultants or gurus:
1.- Have you ever seen in any SAP APO customer, that in their APO DP planning books, they chose or designed to update the Final Demand Plan key Figure in the past closed historical buckets with the Actual Sales?
Meaning that that in the Past closed historical Buckets, Actual Sales and Final Demand Plan, look exactily the same.
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Hello Thanks for your feedback.
I agree with your point, and I hope that i still get more feedback from other Business Process Experts.
I am trying to build a case for my client, to challenge the decision of their initial design as this practice is going to hurt the Demand Management process, if what they intend to achieve is a true "unconstrained demand plan"
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Hi All,
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Dear Diana,
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Regards,
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PP Demand Planning Historical Forecast

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