How To Fix FDT_EXPRESSIONS159 - &1 parameter uses an action but &2 is set to use expressions

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 159

• Message text: &1 parameter uses an action but &2 is set to use expressions

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS159 - &1 parameter uses an action but &2 is set to use expressions ?

  The SAP error message FDT_EXPRESSIONS159 indicates a conflict between the configuration of parameters in a function or expression. Specifically, it suggests that one parameter is set to use an action, while another parameter is configured to use expressions. This inconsistency can lead to issues in processing the function or expression correctly.
  Cause:
  
  Parameter Configuration Conflict: The error arises when there is a mismatch in the expected configuration of parameters. For example, if one parameter is defined to execute an action (like a function call or a specific operation), but another parameter is set to evaluate an expression, the system cannot reconcile these two different types of processing.
  Incorrect Setup in the Function Module or Expression: This can happen if the function module or expression is not set up correctly, leading to a situation where the parameters are not aligned in terms of their intended use.
  
  Solution:
  
  Review Parameter Settings: Check the configuration of the parameters involved in the function or expression. Ensure that all parameters are consistently set to either use actions or expressions, depending on the intended logic.
  Modify the Function or Expression: If necessary, adjust the function or expression to ensure that the parameters align correctly. This may involve changing the type of one of the parameters to match the others.
  Consult Documentation: Refer to the SAP documentation or help resources for guidance on how to properly configure parameters for the specific function or expression you are working with.
  Testing: After making changes, test the function or expression to ensure that the error is resolved and that it behaves as expected.
  
  Related Information:
  
  SAP FDT (Flexible Data Transfer): This error is often encountered in the context of SAP FDT, which is used for data transfer and transformation processes. Understanding how FDT handles parameters and expressions can help in troubleshooting.
  Debugging Tools: Utilize SAP debugging tools to trace the execution of the function or expression and identify where the configuration mismatch occurs.
  SAP Community and Support: If the issue persists, consider reaching out to the SAP community forums or SAP support for additional assistance and insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error and ensure that your parameters are configured correctly for the intended operation.