How To Fix FDT_EXPRESSIONS035 - Invalid boolean string; token(s) missing at the end

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 035

• Message text: Invalid boolean string; token(s) missing at the end

What causes this issue?

For the current boolean expression, the system has determined that the
condition string ends with an opening bracket "(" or with an operator
that is not followed by an operand. However, the condition string of a
boolean expression must always end with an operand. If the last operand
is in brackets, the last character of the condition string must be a
closing bracket ")".

System Response

The object cannot be activated.

How to fix this error?

Check the condition string of the expression and decide how to correct
the problem. The following scenarios are possible:
The condition string ends with an opening bracket:
The condition string was already completed, and the opening bracket was
added accidentally: Remove the bracket.
The operand before the opening bracket is already introduced by an
opening bracket: Replace the opening bracket at the end of the condition
string by a closing bracket.
The opening bracket was meant as the beginning of one or more operands
that have been omitted inadvertently: Complete the missing operands and
operators after the opening bracket, and finalize the condition string
with a closing bracket.
The condition string ends with an operator:
Remove the operator, or add an operand after the operator.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS035 - Invalid boolean string; token(s) missing at the end ?

  The SAP error message FDT_EXPRESSIONS035 indicates that there is an issue with a boolean expression in your SAP application, specifically that the expression is incomplete or incorrectly formatted. This error typically arises in the context of using the SAP Fiori Design Studio or SAP Business Application Studio, where boolean expressions are used for conditions in expressions or filters.
  Cause:
  The error is caused by an invalid boolean string, which means that the expression you are trying to evaluate is not properly formed. Common reasons for this error include:
  
  Missing operators (e.g., AND, OR).
  Incomplete expressions (e.g., a missing closing parenthesis).
  Incorrect syntax (e.g., using invalid characters or formats).
  A logical expression that does not have a complete set of tokens.
  
  Solution:
  To resolve the FDT_EXPRESSIONS035 error, you can follow these steps:
  
  
  Review the Expression: Check the boolean expression for any syntax errors. Ensure that all operators and operands are correctly placed and that there are no missing components.
  
  
  Check Parentheses: Ensure that all opening parentheses have corresponding closing parentheses. Mismatched parentheses are a common source of errors.
  
  
  Validate Tokens: Make sure that all tokens (variables, constants, operators) used in the expression are valid and correctly defined.
  
  
  Use Debugging Tools: If available, use debugging tools or logs to identify the exact location of the error in the expression.
  
  
  Test Incrementally: If the expression is complex, try breaking it down into smaller parts and testing each part individually to isolate the issue.
  
  
  Refer to Documentation: Consult the SAP documentation for the specific syntax and rules for boolean expressions in the context you are working in. This can provide guidance on the correct format.
  
  
  Seek Help from Community or Support: If you are unable to resolve the issue, consider reaching out to the SAP community forums or SAP support for assistance.
  
  
  Related Information:
  
  SAP Fiori Design Studio: This is a development environment for creating analytical applications. Understanding how to write expressions in this environment is crucial.
  Boolean Logic: Familiarity with boolean logic (AND, OR, NOT) and how it is applied in programming can help in constructing valid expressions.
  SAP Notes and Knowledge Base Articles: Check for any SAP Notes related to this error message for additional context or fixes that may have been provided by SAP.
  
  By carefully reviewing and correcting the boolean expression, you should be able to resolve the FDT_EXPRESSIONS035 error.