How To Fix FDT_EXPRESSIONS598 - The aggregation function &1 is not supported for this database field

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 598

• Message text: The aggregation function &1 is not supported for this database field

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS598 - The aggregation function &1 is not supported for this database field ?

  The SAP error message FDT_EXPRESSIONS598 indicates that an aggregation function you are trying to use is not supported for the specific database field in your SAP system. This typically occurs in the context of SAP Fiori or SAP BW when working with analytical queries or reports.
  Cause:
  
  Unsupported Aggregation Function: The aggregation function you are trying to apply (e.g., SUM, AVG, COUNT) is not compatible with the data type of the database field you are using. For example, you cannot apply a SUM function to a text field.
  Field Characteristics: The field may be defined in a way that does not allow for aggregation, such as being a non-numeric field or a field that is not intended for aggregation in the context of the query.
  Database Limitations: Some databases have specific limitations on the types of aggregation that can be performed on certain data types.
  
  Solution:
  
  Check Data Type: Verify the data type of the field you are trying to aggregate. Ensure that it is a numeric type if you are using aggregation functions like SUM or AVG.
  Change Aggregation Function: If the field is not suitable for the aggregation function you are using, consider using a different function that is compatible with the field type. For example, if the field is a string, you might use COUNT instead of SUM.
  Modify Query: If you are using a query or report, modify it to exclude the unsupported aggregation or to use a different field that supports the desired aggregation.
  Consult Documentation: Refer to the SAP documentation for the specific database or module you are using to understand the supported aggregation functions for different data types.
  Check Field Settings: In some cases, you may need to check the settings of the field in the data model or the underlying database to ensure it is configured correctly for aggregation.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Testing: If possible, create a test query with a simplified version of your data model to isolate the issue and determine which specific field or aggregation is causing the error.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.