How To Fix FDT_EXPRESSIONS033 - Invalid boolean string; unknown token &1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 033

• Message text: Invalid boolean string; unknown token &1

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS033 - Invalid boolean string; unknown token &1 ?

  The SAP error message FDT_EXPRESSIONS033: Invalid boolean string; unknown token &1 typically occurs in the context of using the SAP Fiori Design Studio or SAP UI5 applications when there is an issue with a boolean expression in a filter or condition. This error indicates that the system encountered an unexpected token in a boolean expression, which it could not recognize or process.
  Cause:
  
  Syntax Error: The boolean expression may contain a syntax error, such as a missing operator (AND, OR), incorrect parentheses, or invalid characters.
  Unknown Token: The token mentioned in the error message (&1) is not recognized by the system. This could be due to a typo or using a variable that has not been defined.
  Data Type Mismatch: The expression may be trying to evaluate a boolean condition on a field that does not support boolean values.
  Configuration Issues: There may be issues in the configuration of the application or the data model that lead to invalid expressions.
  
  Solution:
  
  Check Syntax: Review the boolean expression for any syntax errors. Ensure that all operators and parentheses are correctly placed.
  Validate Tokens: Ensure that all tokens used in the expression are valid and recognized by the system. Check for typos or incorrect variable names.
  Data Type Verification: Make sure that the fields being used in the boolean expression are of the correct data type and can be evaluated as boolean.
  Debugging: Use debugging tools to trace the execution and identify where the error occurs. This can help pinpoint the exact location of the invalid token.
  Documentation: Refer to the SAP documentation for the specific version you are using to understand the expected syntax and valid tokens for boolean expressions.
  Testing: If possible, simplify the boolean expression to isolate the issue. Start with a basic expression and gradually add complexity to identify the problematic part.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Community Forums: Look for discussions in SAP Community or other forums where similar issues have been reported and resolved.
  SAP Help Portal: Utilize the SAP Help Portal for detailed documentation on expressions and filters in the context of your specific SAP application.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.