How To Fix FDT_EXPRESSIONS020 - No valid data object for the return value; boolean data object needed

FDT_EXPRESSIONS020 - Overview

• Message type: E = Error

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

• Message number: 020

• Message text: No valid data object for the return value; boolean data object needed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS020 - No valid data object for the return value; boolean data object needed ?

  The SAP error message FDT_EXPRESSIONS020 indicates that there is an issue with the return value of a function or expression in the context of the SAP Fiori or SAP UI5 applications, particularly when dealing with expressions in the FDT (Form Data Tool) or similar frameworks. The error specifically states that a valid data object is required for the return value, and it expects a boolean data object.
  
  Cause:
  
  Incorrect Data Type: The expression or function is expected to return a boolean value (true/false), but it is either returning a different data type or not returning any value at all.
  Missing Data Object: The data object that is supposed to hold the boolean value is not defined or is not accessible in the current context.
  Expression Logic Error: There may be a logical error in the expression that leads to an invalid return type.
  
  Configuration Issues: There might be issues in the configuration of the FDT