How To Fix KH604 - Aggregation over time is not possible for special periods

SAP Error Message - Details

• Message type: E = Error

• Message class: KH - CO-PA Reporting

• Message number: 604

• Message text: Aggregation over time is not possible for special periods

What causes this issue?

You specified an aggregation rule that requires the number of calendar
or factory calendar days for each period to be calculable (either
"Average weighted by calendar days" or "Average weighted by factory
calendar days).

System Response

The system determined that the reporting period includes special
periods that do not permit this.

How to fix this error?

For key figures with the aggregation rule "Average by calendar days" or
"Average by factory calendar days", you need to change the timeframe
you want to analyze so that it only contains normal posting periods.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KH604 - Aggregation over time is not possible for special periods ?

  The SAP error message KH604, which states "Aggregation over time is not possible for special periods," typically occurs in the context of SAP Controlling (CO) when you are trying to perform a time-based aggregation (like reporting or analysis) that involves special periods (e.g., periods that are not standard monthly periods).
  Cause:
  The error arises because special periods in SAP are designed for specific purposes, such as year-end closing or adjustments, and they do not support standard time-based aggregations. This limitation is due to the way SAP handles data in special periods, which are treated differently from regular periods.
  Solution:
  To resolve the KH604 error, consider the following approaches:
  
  
  Use Standard Periods: If possible, adjust your reporting or analysis to use standard periods instead of special periods. This may involve changing the selection criteria in your report or analysis.
  
  
  Adjust the Reporting Logic: If you need to include special periods in your analysis, you may need to modify the logic of your report or query to handle special periods differently. This could involve creating separate calculations or aggregations for special periods.
  
  
  Check Configuration: Ensure that your system configuration allows for the desired reporting. Sometimes, settings in the controlling area or in the report itself may need to be adjusted.
  
  
  Consult Documentation: Review SAP documentation or help resources related to the specific transaction or report you are using. There may be specific guidelines or best practices for handling special periods.
  
  
  Seek Help from SAP Support: If the issue persists and you cannot find a suitable workaround, consider reaching out to SAP support for assistance. They may provide insights specific to your system configuration or version.
  
  
  Related Information:
  
  Special Periods: In SAP, special periods are typically used for adjustments and closing activities. They are defined in the fiscal year variant and can be used for reporting purposes but have limitations.
  Controlling Reports: Familiarize yourself with the specific reports or transactions you are using in CO, as some may have specific requirements or limitations regarding special periods.
  SAP Notes: Check for any relevant SAP Notes that may address this error or provide additional context or solutions.
  
  By following these steps, you should be able to address the KH604 error and successfully perform your desired analysis or reporting in SAP.