How To Fix FDT_EXPRESSIONS663 - Result data object might not be compatible with result of last function

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 663

• Message text: Result data object might not be compatible with result of last function

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS663 - Result data object might not be compatible with result of last function ?

  The SAP error message FDT_EXPRESSIONS663 indicates that there is a compatibility issue between the result data object and the result of the last function in a formula or expression. This typically occurs in the context of SAP's Flexible Data Import (FDI) or similar data processing scenarios where expressions are evaluated.
  Cause:
  
  
  Data Type Mismatch: The most common cause of this error is that the data type of the result from the last function does not match the expected data type of the result data object. For example, if the last function returns a string but the result data object is expecting a numeric value, this error will occur.
  
  
  Incorrect Function Usage: If a function is used incorrectly or if the parameters passed to the function do not align with what the function expects, it can lead to this error.
  
  
  Expression Logic: The logic in the expression may be flawed, leading to a situation where the output type does not match the expected type.
  
  
  Solution:
  
  
  Check Data Types: Review the data types of the result data object and the output of the last function. Ensure that they are compatible. You may need to cast or convert data types appropriately.
  
  
  Review Function Parameters: Ensure that the parameters being passed to the function are correct and that the function is being used as intended. Refer to the function documentation for guidance on expected input and output types.
  
  
  Modify Expression Logic: If the expression logic is causing the issue, consider revising it to ensure that the output type aligns with what is expected. This may involve restructuring the expression or using different functions.
  
  
  Debugging: Use debugging tools available in SAP to step through the expression evaluation process. This can help identify where the mismatch occurs.
  
  
  Consult Documentation: Refer to SAP documentation or community forums for specific guidance on the functions being used and their expected outputs.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed.
  Testing: Create test cases with simplified expressions to isolate the issue and understand the behavior of the functions involved.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.