How To Fix MPR1028 - Forecast data will not be posted. Inconsistency exists in table &1

MPR1028 - Overview

• Message type: E = Error

• Message class: MPR1 - Messages Transferring Forecast Data from External Systems

• Message number: 028

• Message text: Forecast data will not be posted. Inconsistency exists in table &1

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPR1028 - Forecast data will not be posted. Inconsistency exists in table &1 ?

  The SAP error message MPR1028 indicates that there is an inconsistency in the forecast data that prevents it from being posted. This error typically arises in the context of demand planning and forecasting within the SAP system, particularly when using the SAP Advanced Planning and Optimization (APO) module or similar functionalities.
  
  Cause:
  The inconsistency in table &1 (the specific table name will be provided in the error message) can be due to several reasons, including:
  
  Data Integrity Issues: There may be missing or corrupted data in the forecast tables, which can lead to inconsistencies.
  Configuration Errors: Incorrect settings in the planning area or planning book can cause discrepancies.
  Locking Issues: If another process is locking the data or if there are issues with data transport, it can lead to inconsistencies.
  Master Data Issues: Problems with the master data (like material master or location master) that are linked to the forecast data can also trigger this error.
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