How To Fix PR409 - Not possible to determine season indices (basic value = 0)

PR409 - Overview

• Message type: E = Error

• Message class: PR - Forecast: Help messages

• Message number: 409

• Message text: Not possible to determine season indices (basic value = 0)

What causes this issue?

The seasonal index could not be calculated because the basic value is
0. The basic value is 0 if the system predicts a negative pattern in
the time series.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

You may find that you obtain more satisfactory forecast results by
choosing a different forecast model.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PR409 - Not possible to determine season indices (basic value = 0) ?

  The SAP error message PR409 "Not possible to determine season indices (basic value = 0)" typically occurs in the context of SAP's planning and forecasting functionalities, particularly when dealing with seasonal data. This error indicates that the system is unable to calculate the seasonal indices for a given planning scenario because the basic value (the value used for calculations) is zero.
  
  Cause:
  
  Zero Basic Value: The primary cause of this error is that the basic value for the seasonality calculation is zero. This can happen if there are no sales or planning data available for the periods being analyzed.
  Missing Data: If the data for the relevant periods is missing or not properly maintained, the system cannot compute the seasonal indices.
  Incorrect Configuration: There may be issues with the configuration of the planning area or the settings related to seasonal indices.
  Data Aggregation Issues: If the data is aggregated incorrectly or if there are issues