How To Fix CM_EHFND_FW_CALC_ENG123 - Variable "&1" is not a valid argument of aggregation function "&2"

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_EHFND_FW_CALC_ENG - Common ACE Calculation Engine Exception Class

• Message number: 123

• Message text: Variable "&1" is not a valid argument of aggregation function "&2"

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CM_EHFND_FW_CALC_ENG123 - Variable "&1" is not a valid argument of aggregation function "&2" ?

  The SAP error message CM_EHFND_FW_CALC_ENG123 indicates that there is an issue with the use of an aggregation function in a calculation or formula within the SAP system. Specifically, the error states that the variable &1 is not a valid argument for the aggregation function &2. 
  Cause:
  
  Invalid Variable: The variable being used in the aggregation function may not be defined correctly or may not exist in the context where it is being called.
  Incorrect Function Usage: The aggregation function may not support the type of variable being passed to it. For example, trying to aggregate a non-numeric field.
  Context Issues: The variable may not be available in the context of the calculation or may not be part of the data set being processed.
  Data Type Mismatch: The data type of the variable may not be compatible with the aggregation function being used.
  
  Solution:
  
  Check Variable Definition: Ensure that the variable &1 is correctly defined and available in the context where the aggregation function &2 is being used.
  Review Aggregation Function: Verify that the aggregation function is appropriate for the variable type. For example, if you are using a SUM function, ensure that the variable is numeric.
  Context Validation: Make sure that the variable is part of the data set being processed and is accessible in the calculation context.
  Data Type Verification: Check the data type of the variable and ensure it matches the expected input for the aggregation function.
  Debugging: If possible, use debugging tools within SAP to trace the execution and identify where the error occurs.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the specific aggregation functions and their requirements.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  Transaction Codes: Use transaction codes like SE80 (Object Navigator) or SE37 (Function Module) to explore the relevant objects and functions.
  Error Logs: Check the application logs (transaction SLG1) for more detailed error messages that may provide additional context.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.