How To Fix FUNC_ADT018 - Parameter name &1 already exists

FUNC_ADT018 - Overview

• Message type: E = Error

• Message class: FUNC_ADT -

• Message number: 018

• Message text: Parameter name &1 already exists

Self-Explanatory Message

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FUNC_ADT018 - Details

• The SAP error message FUNC_ADT018, which states "Parameter name &1 already exists," typically occurs in the context of ABAP development, particularly when defining parameters for a function module or method. This error indicates that you are trying to create a parameter with a name that has already been used in the same context (e.g., in the same function module or method).
  
  Cause:
  
  Duplicate Parameter Name: The most common cause of this error is that you are attempting to define a parameter (input, output, or changing) with a name that is already in use within the same function module or method.
  Scope Issues: If you are working with nested function modules or methods, a parameter name might be conflicting with another parameter in the outer scope.
  
  
  Solution:
  
  Rename the Parameter: The simplest solution is to rename the parameter to a unique name that does not conflict with existing parameters.
  Check Existing Parameters: Review the list of parameters