How To Fix FDT_EXPRESSIONS031 - Invalid boolean string; unknown tokens in &1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 031

• Message text: Invalid boolean string; unknown tokens in &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS031 - Invalid boolean string; unknown tokens in &1 ?

  The SAP error message FDT_EXPRESSIONS031 indicates that there is an issue with a boolean expression in your SAP system. Specifically, the error message states that there are "unknown tokens" in the boolean string you are trying to use. This typically occurs in the context of using expressions in the SAP Fiori or SAP S/4HANA environments, particularly when working with Field Data Tool (FDT) or similar functionalities.
  
  Cause:
  
  Syntax Errors: The boolean expression may contain syntax errors, such as incorrect operators, missing parentheses, or unsupported functions.
  Unknown Tokens: The expression may include tokens (variables, fields, or functions) that are not recognized by the system. This could be due to typos or using fields that are not available in the current context.
  Unsupported Features: The expression might be using features or functions that are not supported in the version of SAP you are using.
  
  
  Solution:
  
  Check Syntax: Review the boolean expression for any syntax errors. Ensure that all