How To Fix FDT_EXPRESSIONS158 - &1 parameter uses an expression but &2 is set to execute actions

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 158

• Message text: &1 parameter uses an expression but &2 is set to execute actions

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS158 - &1 parameter uses an expression but &2 is set to execute actions ?

  The SAP error message FDT_EXPRESSIONS158 indicates a conflict in the configuration of expressions and actions within the context of the SAP Fiori Design Time (FDT) framework. Specifically, the error message states that a parameter is using an expression, but another parameter is set to execute actions, which leads to a conflict.
  Cause:
  This error typically arises when:
  
  Inconsistent Configuration: You have defined a parameter that is expected to use an expression (for example, a calculation or a conditional expression), but at the same time, another parameter is configured to execute actions (like triggering a function or a method).
  Misalignment of Parameter Types: The parameters are not aligned in terms of their intended use. For instance, if one parameter is meant to derive a value based on an expression, it should not be set to execute actions.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Parameter Configuration:
  
  Go to the configuration of the parameters in your FDT or the relevant application.
  Check the settings for the parameters involved in the error message. Ensure that the parameter using an expression is not set to execute actions.
  
  
  
  Adjust Parameter Types:
  
  If a parameter is intended to use an expression, ensure that it is configured correctly to do so. This may involve changing its type or the way it is defined.
  Conversely, if a parameter is meant to execute actions, ensure that it does not conflict with any expressions.
  
  
  
  Test Changes:
  
  After making the necessary adjustments, test the configuration to ensure that the error no longer appears and that the application behaves as expected.
  
  
  
  Consult Documentation:
  
  If you are unsure about the correct configuration, refer to the SAP documentation for FDT or the specific module you are working with. This can provide insights into how to properly configure expressions and actions.
  
  
  
  Seek Help from SAP Community:
  
  If the issue persists, consider reaching out to the SAP Community or forums where other users may have encountered similar issues. They can provide additional insights or solutions.
  
  
  
  Related Information:
  
  SAP Fiori Design Time (FDT): This is a framework used for designing and configuring SAP Fiori applications. Understanding how expressions and actions work within this framework is crucial for effective configuration.
  Error Codes and Messages: Familiarize yourself with other error codes and messages in SAP, as they can provide context and help in troubleshooting.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide updates and patches that could resolve underlying issues.
  
  By following these steps, you should be able to resolve the FDT_EXPRESSIONS158 error and ensure that your parameters are configured correctly.