How To Fix FDT_EXPRESSIONS658 - Mapped source object &1 for step &2 does not fit to result of function

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 658

• Message text: Mapped source object &1 for step &2 does not fit to result of function

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS658 - Mapped source object &1 for step &2 does not fit to result of function ?

  The SAP error message FDT_EXPRESSIONS658 indicates that there is a mismatch between the mapped source object and the expected result of a function in a data transformation or expression context. This typically occurs in the context of SAP Data Services or SAP Data Transformation tools where data is being manipulated or transformed.
  Cause:
  
  Data Type Mismatch: The source object (e.g., a field or variable) may have a different data type than what the function is expecting. For example, if the function expects a numeric value but receives a string, this error can occur.
  Incorrect Mapping: The mapping of the source object to the function may be incorrect. This can happen if the wrong field is selected or if the field does not exist in the context of the transformation.
  Function Expectations: The function being used may have specific requirements regarding the input parameters that are not being met by the mapped source object.
  Versioning Issues: If there are changes in the data model or the function definitions, it may lead to inconsistencies that trigger this error.
  
  Solution:
  
  Check Data Types: Verify that the data types of the source object and the expected result of the function match. If they do not, you may need to convert the data type of the source object or adjust the function to accept the current data type.
  Review Mappings: Go through the mappings in your transformation logic to ensure that the correct source object is being used. Make sure that the field you are mapping exists and is appropriate for the function.
  Function Documentation: Consult the documentation for the function you are using to understand its input requirements. Ensure that you are providing the correct parameters.
  Test with Sample Data: If possible, test the transformation with sample data to see if the error persists. This can help isolate the issue.
  Debugging: Use debugging tools available in SAP to step through the transformation logic and identify where the mismatch occurs.
  Consult SAP Notes: Check for any relevant SAP Notes or updates that may address known issues related to this error message.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the specific function you are using to understand its requirements and limitations.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Error Logs: Review error logs and system messages for additional context that may help in diagnosing the issue.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.