How To Fix FDT_EXPRESSIONS758 - Result type does not match aggregation column type

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 758

• Message text: Result type does not match aggregation column type

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS758 - Result type does not match aggregation column type ?

  The SAP error message FDT_EXPRESSIONS758 indicates that there is a mismatch between the result type of an expression and the type of the aggregation column in a data model or report. This typically occurs in the context of SAP applications that utilize the Flexible Data Model (FDT) or similar reporting tools.
  Cause:
  The error arises when:
  
  An expression is defined in a way that its result type (e.g., numeric, string, date) does not align with the expected type of the aggregation column.
  The aggregation function (like SUM, AVG, COUNT, etc.) is applied to a column that has a different data type than what the function expects.
  There may be a misconfiguration in the data model or report settings where the data types are not properly aligned.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Data Types:
  
  Review the data types of the columns involved in the expression and the aggregation. Ensure that they are compatible.
  For example, if you are trying to sum a column, ensure that the column is of a numeric type.
  
  
  
  Modify the Expression:
  
  If the expression is returning a different type, modify it to ensure that it returns a compatible type with the aggregation column.
  You may need to cast or convert the data type of the expression to match the aggregation column type.
  
  
  
  Review Aggregation Settings:
  
  Check the aggregation settings in your report or data model. Ensure that the aggregation function is appropriate for the data type of the column being aggregated.
  
  
  
  Test Changes:
  
  After making adjustments, test the report or data model to ensure that the error is resolved.
  
  
  
  Consult Documentation:
  
  If you are unsure about the data types or how to modify the expression, refer to the SAP documentation or help resources for guidance on data types and expressions.
  
  
  
  Related Information:
  
  Data Types in SAP: Familiarize yourself with the common data types used in SAP (e.g., CHAR, NUMC, DEC, DATS) and their expected behaviors in expressions and aggregations.
  Aggregation Functions: Understand the different aggregation functions available in SAP and their requirements regarding input data types.
  SAP Community and Support: If the issue persists, consider reaching out to the SAP community forums or SAP support for additional assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.