How To Fix /SAPAPO/MA165 - The gamma parameter should lie between 0 and 1


SAP Error Message - Details

  • Message type: E = Error

  • Message class: /SAPAPO/MA -

  • Message number: 165

  • Message text: The gamma parameter should lie between 0 and 1

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  • Self-Explanatory Message

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    To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

  • What is the cause and solution for SAP error message /SAPAPO/MA165 - The gamma parameter should lie between 0 and 1 ?

    The SAP error message /SAPAPO/MA165 indicates that the gamma parameter used in a forecasting model within SAP Advanced Planning and Optimization (APO) is set to a value that is outside the acceptable range of 0 to 1. This parameter is typically used in exponential smoothing methods for forecasting.

    Cause:

    1. Incorrect Configuration: The gamma parameter may have been manually set to a value outside the valid range during the configuration of the forecasting model.
    2. Data Input Error: There may be an issue with the data input or the way the forecasting model is being executed, leading to an invalid gamma value.
    3. Model Selection: The selected forecasting model may not be compatible with the current settings, leading to an invalid parameter configuration.

    Solution:

    1. Check Configuration:

      • Navigate to the forecasting model configuration in SAP APO.
      • Verify the gamma parameter setting and ensure it is set to a value between 0 and 1.
      • If necessary, adjust the gamma value to a valid range.
    2. Review Input Data:

      • Ensure that the input data used for the forecasting model is correct and complete.
      • Check for any anomalies or outliers in the data that might affect the calculation of the gamma parameter.
    3. Model Compatibility:

      • Ensure that the forecasting model you are using is appropriate for the data and the parameters you have set.
      • If you are using a specific forecasting method (e.g., exponential smoothing), confirm that the parameters align with the requirements of that method.
    4. Testing:

      • After making adjustments, run a test forecast to ensure that the error does not reoccur.
      • Monitor the results to confirm that the forecasting model is functioning as expected.

    Related Information:

    • Gamma Parameter: In the context of exponential smoothing, the gamma parameter is used to control the level of smoothing applied to the forecast. A value of 0 means no smoothing, while a value of 1 means maximum smoothing.
    • Forecasting Models in SAP APO: Familiarize yourself with the different forecasting models available in SAP APO and their respective parameter requirements.
    • SAP Documentation: Refer to the official SAP documentation for detailed information on configuring forecasting models and understanding the parameters involved.

    If the issue persists after following these steps, consider reaching out to your SAP support team or consulting the SAP community for further assistance.

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