How To Fix FDT_EXPRESSIONS079 - Evaluation of user defined boolean expression failed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 079

• Message text: Evaluation of user defined boolean expression failed

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS079 - Evaluation of user defined boolean expression failed ?

  The SAP error message FDT_EXPRESSIONS079 indicates that there was a failure in evaluating a user-defined boolean expression in the context of SAP's Flexible Data Import (FDI) or similar functionalities that utilize expressions. This error typically arises when the expression syntax is incorrect, or when the data types involved in the expression do not match or are incompatible.
  Causes:
  
  Syntax Errors: The boolean expression may contain syntax errors, such as missing operators, incorrect use of parentheses, or invalid function calls.
  Data Type Mismatch: The expression may be trying to compare or operate on incompatible data types (e.g., comparing a string to a number).
  Undefined Variables: The expression may reference variables or fields that are not defined or are not available in the current context.
  Logical Errors: The logic of the expression may be flawed, leading to an evaluation that cannot be completed.
  
  Solutions:
  
  Check Syntax: Review the boolean expression for any syntax errors. Ensure that all operators and parentheses are correctly placed.
  Validate Data Types: Ensure that the data types of the variables or fields used in the expression are compatible. If necessary, convert data types to match.
  Define Variables: Make sure that all variables or fields referenced in the expression are defined and accessible in the context where the expression is being evaluated.
  Test Expressions: If possible, test the expression in a simpler context or use a debugging tool to isolate the issue.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on the correct syntax and usage of boolean expressions in the specific context you are working with.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message. SAP frequently updates its knowledge base with solutions to common problems.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can provide insights or solutions.
  SAP Support: If the issue persists and you are unable to resolve it, consider reaching out to SAP Support for assistance. Provide them with details about the expression, the context in which the error occurs, and any relevant logs or screenshots.
  
  By following these steps, you should be able to identify and resolve the cause of the FDT_EXPRESSIONS079 error in your SAP environment.