How To Fix WD500 - Parameter & is a constant

WD500 - Overview

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 500

• Message text: Parameter & is a constant

What causes this issue?

You have entered a constant as a parameter for the user decision.

System Response

At runtime, the parameter is replaced by the constant you have entered.
It is therefore unnecessaty to use the variable. You can write the text
directly in the title of the user decision.

How to fix this error?

However, if you wish to display the CONTENTS of a container element or
an object variable at runtime, you must enter a valid expression for a
variable or a system field using F4 possible entries help.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WD500 - Parameter & is a constant ?

  SAP Error Message:
  WD500 Parameter & is a constant
  
  
  Cause:
  This error typically occurs in the context of Web Dynpro ABAP programming. The message indicates that a parameter, which is expected to be a variable or a reference, is instead a constant value. In other words, the code or configuration is trying to pass a constant (literal value) where a parameter (variable or reference) is required.
  For example, this can happen if you try to pass a literal string or number directly to a method or function that expects a parameter to be a variable or a reference, or if you try to assign a constant to a parameter that is defined as a changing or exporting parameter.
  
  Common Scenarios:
  
  Passing a literal value (e.g., 'X', 1, 'constant') to a method parameter that expects a variable or reference.
  Incorrect usage of parameters in method calls or event handlers in Web Dynpro components.
  Misconfiguration in the context mapping or