How To Fix UPF1023 - Seasonal index is 0

UPF1023 - Overview

• Message type: E = Error

• Message class: UPF1 - Messages SEM-BPS Forecast

• Message number: 023

• Message text: Seasonal index is 0

What causes this issue?

The historic data contains several values that are lesser than or equal
to 0. The calculation formula for exponential smoothing cannot be
applied in all cases. This can have a negative effect on the result of
the forecast.

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?

Check the accuracy of the forecast.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

UPF1023 - Details

• The SAP error message UPF1023, which states "Seasonal index is 0," typically occurs in the context of SAP's forecasting and planning functionalities, particularly when using the SAP Integrated Business Planning (IBP) or SAP Advanced Planning and Optimization (APO) modules. This error indicates that the system has encountered a seasonal index value of zero, which is problematic for calculations that rely on seasonal adjustments.
  
  Cause:
  
  Missing Data: The seasonal index is calculated based on historical data. If there is insufficient historical data for the period being analyzed, the system may not be able to compute a valid seasonal index.
  Data Quality Issues: If the historical data contains errors, such as missing values or incorrect entries, it can lead to a zero seasonal index.
  
  Configuration Issues: Incorrect configuration of the forecasting model or parameters may lead to the calculation of a zero seasonal index.
  Seasonality Not Defined: If the product or time series does not have defined