How To Fix PR428 - Ex-post forecast carried out

SAP Error Message - Details

• Message type: E = Error

• Message class: PR - Forecast: Help messages

• Message number: 428

• Message text: Ex-post forecast carried out

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message PR428 - Ex-post forecast carried out ?

  The SAP error message PR428 "Ex-post forecast carried out" typically occurs in the context of demand planning and forecasting within the SAP system, particularly in the SAP Advanced Planning and Optimization (APO) module or SAP Integrated Business Planning (IBP). This message indicates that an ex-post forecast has been executed, which means that the system has generated a forecast based on historical data rather than a predictive model.
  Cause:
  
  Historical Data Usage: The error usually arises when the system attempts to generate a forecast using historical data that has already been processed or when the forecast is being recalculated without the necessary adjustments.
  Configuration Issues: There may be issues with the configuration of the forecasting model or parameters that lead to the system treating the forecast as an ex-post calculation.
  Data Integrity: Inconsistencies or issues with the underlying data can also trigger this message, especially if the historical data is not aligned with the current forecasting requirements.
  
  Solution:
  
  Review Forecasting Settings: Check the settings and parameters of the forecasting model being used. Ensure that they are configured correctly for the type of forecast you want to generate (e.g., ex-ante vs. ex-post).
  Data Validation: Validate the historical data being used for forecasting. Ensure that it is complete, accurate, and relevant to the current forecasting period.
  Re-run Forecasting: If the ex-post forecast was not intended, you may need to clear the previous forecast and re-run the forecasting process with the correct settings.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on handling this error in your version of SAP.
  Seek Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert who can provide more tailored assistance based on your specific configuration and business processes.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Training and Documentation: Review training materials or documentation related to demand planning and forecasting in SAP to better understand how to manage forecasts effectively.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By addressing the underlying causes and following the suggested solutions, you should be able to resolve the PR428 error and improve your forecasting processes in SAP.