How To Fix /SAPAPO/PR402 - Forecast values will be negative

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/PR -

• Message number: 402

• Message text: Forecast values will be negative

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/PR402 - Forecast values will be negative ?

  The SAP error message /SAPAPO/PR402 Forecast values will be negative typically occurs in the SAP Advanced Planning and Optimization (APO) module when the system attempts to generate a forecast that results in negative values. This can happen for various reasons, including issues with historical data, configuration settings, or the forecasting model being used.
  Causes:
  
  Negative Historical Data: If the historical data used for forecasting contains negative values, it can lead to negative forecast values.
  Inappropriate Forecasting Model: The selected forecasting model may not be suitable for the data, especially if it is not designed to handle negative values.
  Data Input Errors: Incorrect or erroneous data entries in the master data or transaction data can lead to negative forecasts.
  Seasonality and Trends: If the data has strong seasonal patterns or trends that are not properly accounted for, it may result in negative forecasts.
  Configuration Issues: Incorrect settings in the forecasting profile or parameters can lead to inappropriate calculations.
  
  Solutions:
  
  Review Historical Data: Check the historical data for any negative values and correct them if they are not valid. Ensure that the data reflects realistic values.
  Change Forecasting Model: If the current forecasting model is not suitable, consider switching to a different model that can handle the data appropriately.
  Adjust Forecasting Parameters: Review and adjust the parameters in the forecasting profile to ensure they are set correctly for the data being analyzed.
  Data Cleansing: Perform data cleansing to remove or correct any erroneous data entries that could be affecting the forecast.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the forecasting model being used and its limitations.
  Use Constraints: If applicable, set constraints in the forecasting process to prevent negative values from being generated.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Training and Documentation: Review training materials or documentation related to SAP APO forecasting to better understand how to configure and use the forecasting tools effectively.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the /SAPAPO/PR402 Forecast values will be negative error and generate valid forecast values.