How To Fix FDT_EXPRESSIONS809 - Function call &1 not possible, &2 parameter &3 has a reference type

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 809

• Message text: Function call &1 not possible, &2 parameter &3 has a reference type

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS809 - Function call &1 not possible, &2 parameter &3 has a reference type ?

  The SAP error message FDT_EXPRESSIONS809 indicates that there is an issue with a function call in your SAP application. Specifically, the error message states that the function call is not possible because one of the parameters being passed has a reference type, which is not allowed in this context.
  Cause:
  
  Reference Type Parameter: The function you are trying to call does not accept parameters of reference type. This could happen if you are trying to pass an object or a reference to an object instead of a value type.
  Incorrect Function Usage: The function might be designed to work with primitive data types (like integers, strings, etc.) and not with complex types or references.
  Data Type Mismatch: There may be a mismatch between the expected data types of the function parameters and the actual data types being passed.
  
  Solution:
  
  Check Function Definition: Review the function definition to understand the expected parameter types. Ensure that you are passing the correct types as per the function's requirements.
  Convert Reference Types: If you need to pass a reference type, consider converting it to a value type if possible. This may involve extracting the necessary value from the object or using a different function that accepts reference types.
  Debugging: Use debugging tools in SAP to trace the function call and inspect the parameters being passed. This can help identify where the reference type is being introduced.
  Consult Documentation: Refer to the SAP documentation or function module documentation for more details on the expected parameters and their types.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. Sometimes, there may be updates or fixes provided by SAP.
  Community Forums: Look for discussions in SAP community forums or platforms like SAP Community, Stack Overflow, or other technical forums where similar issues may have been discussed.
  SAP Support: If the issue persists and you cannot find a solution, consider reaching out to SAP support for assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.