How To Fix CM_EHFND_REQ045 - Variable "&1" must be aggregated first in output "&2"

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_EHFND_REQ - Messages for Compliance Requirement

• Message number: 045

• Message text: Variable "&1" must be aggregated first in output "&2"

Self-Explanatory Message

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• What is the cause and solution for SAP error message CM_EHFND_REQ045 - Variable "&1" must be aggregated first in output "&2" ?

  The SAP error message CM_EHFND_REQ045 indicates that a variable (denoted as "&1") must be aggregated before it can be used in the output (denoted as "&2"). This error typically arises in the context of reporting or data extraction, particularly when working with SAP BW (Business Warehouse) or SAP HANA.
  Cause:
  
  Non-Aggregated Variable: The variable you are trying to use in your output is not aggregated. In SAP BW, certain variables need to be aggregated to provide meaningful results, especially when they are part of a query or report that summarizes data.
  Query Design: The query or report may be designed in such a way that it expects aggregated data, but the variable in question is being treated as a detail level variable.
  Data Model Issues: There may be issues with the underlying data model or InfoProvider that prevent the variable from being aggregated correctly.
  
  Solution:
  
  Check Variable Settings: Review the settings of the variable in the query designer. Ensure that it is set to be aggregated appropriately. You may need to change the aggregation settings or the way the variable is defined.
  Modify Query: If the variable is not meant to be aggregated, consider modifying the query to either remove the variable or replace it with an aggregated version.
  Aggregation in Data Model: Ensure that the underlying data model supports the aggregation of the variable. This may involve checking the InfoObjects, InfoProviders, or the data flow to ensure that the data can be aggregated as needed.
  Use Aggregated Key Figures: If the variable is a key figure, ensure that you are using an aggregated key figure instead of a non-aggregated one in your output.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on how to handle variables and aggregation in your version of SAP.
  
  Related Information:
  
  SAP BW Query Designer: Familiarize yourself with the Query Designer tool, as it allows you to define how variables and key figures are treated in reports.
  Aggregation Types: Understand the different types of aggregation (SUM, AVG, COUNT, etc.) and how they apply to your data.
  SAP Notes and Community: Check SAP Notes for any known issues or patches related to this error message. The SAP Community forums can also be a valuable resource for troubleshooting similar issues.
  
  By addressing the aggregation requirements of the variable in question, you should be able to resolve the CM_EHFND_REQ045 error and successfully generate your report or query output.