How To Fix /SAPAPO/AMON_ALERTS420 - MAD upper limit exceeded


SAP Error Message - Details

  • Message type: E = Error

  • Message class: /SAPAPO/AMON_ALERTS -

  • Message number: 420

  • Message text: MAD upper limit exceeded

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  • Self-Explanatory Message

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  • What is the cause and solution for SAP error message /SAPAPO/AMON_ALERTS420 - MAD upper limit exceeded ?

    The SAP error message /SAPAPO/AMON_ALERTS420 MAD upper limit exceeded is related to the Advanced Planning and Optimization (APO) module in SAP. This error typically indicates that the Mean Absolute Deviation (MAD) for a particular planning object has exceeded a predefined upper limit. The MAD is a measure of forecast accuracy, and exceeding the limit suggests that the forecast is not performing well.

    Cause:

    1. Poor Forecasting Model: The forecasting model used may not be suitable for the data, leading to inaccurate forecasts.
    2. Data Quality Issues: Inaccurate or incomplete historical data can lead to poor forecasting results.
    3. Seasonality or Trends: If the data has strong seasonal patterns or trends that are not accounted for in the forecasting model, it can lead to high MAD values.
    4. Parameter Settings: The upper limit for MAD may be set too low for the specific context of the planning object.

    Solution:

    1. Review Forecasting Model: Analyze the forecasting model being used and consider switching to a more appropriate model that better fits the data characteristics.
    2. Data Cleansing: Ensure that the historical data used for forecasting is accurate and complete. Remove outliers or correct any data entry errors.
    3. Adjust Parameters: If the upper limit for MAD is set too low, consider adjusting it to a more realistic value based on historical performance.
    4. Analyze Seasonality and Trends: If applicable, incorporate seasonal and trend components into the forecasting model to improve accuracy.
    5. Monitor and Adjust: Continuously monitor the forecasting performance and make adjustments as necessary. Use performance metrics to evaluate the effectiveness of changes made.

    Related Information:

    • SAP Notes: Check SAP Notes for any specific patches or updates related to this error message.
    • APO Documentation: Review the SAP APO documentation for best practices in forecasting and planning.
    • Training and Support: Consider training for users involved in forecasting to improve their understanding of the tools and techniques available in SAP APO.
    • Consult SAP Community: Engage with the SAP Community for insights and experiences from other users who may have encountered similar issues.

    By addressing the underlying causes and implementing the suggested solutions, you can reduce the MAD and improve the overall forecasting accuracy in your SAP APO environment.

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