How To Fix MA779 - Info structure's data records exist, not possible to change period unit

SAP Error Message - Details

• Message type: E = Error

• Message class: MA - Sales and Operations Planning

• Message number: 779

• Message text: Info structure's data records exist, not possible to change period unit

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MA779 - Info structure's data records exist, not possible to change period unit ?

  The SAP error message MA779 indicates that there are existing data records in the information structure that prevent changes to the period unit. This typically occurs when you attempt to change the period unit of an information structure in the Material Management (MM) module, but the system finds that there are already records in the structure for the specified period.
  Cause:
  
  Existing Data Records: The primary cause of this error is that there are already data records in the information structure for the period you are trying to modify. This means that the system has already aggregated data based on the current period unit, and changing it would disrupt the integrity of the data.
  Period Unit Change: The attempt to change the period unit (e.g., from monthly to weekly) is not allowed if there are existing records that have been calculated based on the current period unit.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Existing Data: Review the existing data records in the information structure. You can do this by using transaction codes like MC22 (for displaying information structures) or MC23 (for displaying the structure's data).
  
  
  Delete Existing Records: If you determine that the existing records are no longer needed, you can delete them. This can be done using transaction MC28 (for deleting data records from the information structure). Be cautious with this step, as it will remove historical data.
  
  
  Change the Period Unit: After deleting the existing records, you should be able to change the period unit without encountering the error.
  
  
  Repopulate Data: If necessary, you can then repopulate the information structure with new data using the appropriate data collection transactions (e.g., MC21 for updating the information structure).
  
  
  Consult Documentation: If you are unsure about the implications of deleting data or changing the period unit, consult your SAP documentation or reach out to your SAP support team for guidance.
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MC22: Display Information Structure
  MC23: Display Structure Data
  MC28: Delete Data Records
  MC21: Update Information Structure
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or updates regarding this error message.
  
  
  Backup Data: Always ensure that you have a backup of your data before making changes, especially when deleting records.
  
  
  Testing: If possible, test the changes in a development or quality assurance environment before applying them in production.
  
  
  By following these steps, you should be able to resolve the MA779 error and successfully change the period unit for your information structure.