How To Fix RSDHA809 - Smoothing constant alpha is out of range (0 < alpha < 1)

RSDHA809 - Overview

• Message type: E = Error

• Message class: RSDHA - HANA Analysis in BW

• Message number: 809

• Message text: Smoothing constant alpha is out of range (0 < alpha < 1)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDHA809 - Smoothing constant alpha is out of range (0 < alpha < 1) ?

  The SAP error message RSDHA809 indicates that there is an issue with the smoothing constant alpha in a forecasting model. Specifically, the error states that the value of alpha is out of the acceptable range, which should be between 0 and 1 (exclusive). This error typically occurs in the context of time series forecasting within SAP BW (Business Warehouse) or SAP Analytics Cloud.
  
  Cause:
  The smoothing constant alpha is a parameter used in exponential smoothing methods for forecasting. If the value of alpha is set to:
  
  Less than or equal to 0, or
  Greater than or equal to 1,
  
  the system will throw this error because these values do not make sense in the context of exponential smoothing. The alpha value determines the weight given to the most recent observation relative to the previous forecast. A value of 0 means no weight is given to the most recent observation, while a value of 1 means