How To Fix FDT_EXPRESSIONS609 - For existence check mode, the result should always be boolean

FDT_EXPRESSIONS609 - Overview

• Message type: E = Error

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

• Message number: 609

• Message text: For existence check mode, the result should always be boolean

Self-Explanatory Message

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FDT_EXPRESSIONS609 - Details

• The SAP error message FDT_EXPRESSIONS609 indicates that there is an issue with the expression used in a field or a condition within the SAP system, specifically in the context of the existence check mode. This error typically arises when the expression is expected to return a boolean value (true or false) but does not.
  
  Cause:
  
  Incorrect Expression Logic: The expression defined in the field or condition may not be structured correctly to yield a boolean result. For example, it might be returning a numeric value or a string instead of a true/false outcome.
  Data Type Mismatch: The data type of the expression might not be compatible with the expected boolean output. This can happen if the expression is evaluating a non-boolean field.
  Missing Conditions: If the expression is incomplete or missing necessary conditions, it may not evaluate to a boolean value.
  
  
  Solution:
  
  
  Review the Expression: Check the expression that is causing the error. Ensure that it