How To Fix WER154 - Method must have a return parameter

SAP Error Message - Details

• Message type: E = Error

• Message class: WER - Messages for the package WER

• Message number: 154

• Message text: Method must have a return parameter

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WER154 - Method must have a return parameter ?

  The SAP error message WER154: "Method must have a return parameter" typically occurs in the context of ABAP Objects (Object-Oriented ABAP) programming, specifically when defining or implementing methods in classes or interfaces.
  
  Cause
  
  The error WER154 arises when you define a method in an interface or class as a function method (i.e., a method that is supposed to return a value), but the method does not have a return parameter defined.
  In ABAP Objects, a method that is declared as a function method must have exactly one return parameter specified.
  If the method is declared as a subroutine method (void method), it should not have a return parameter.
  This error is often encountered during the creation or modification of methods in the Class Builder (transaction SE24) or Interface Builder.
  
  
  Explanation
  
  Function method: A method that returns a value. It must have a return parameter defined in the method signature.
  Subroutine method: A method that does not return a value (void). It should not have a return parameter.
  
  If you declare a method as a function method but forget to specify the return parameter, the system raises WER154.
  
  How to reproduce the error
  
  In SE24, create or edit a method.
  Set the method as a function method (i.e., the checkbox "Function" is selected).
  Do not specify a return parameter.
  Save or activate the method.
  The system raises error WER154.
  
  
  Solution
  
  
  Add a return parameter to the method:
  
  Go to the method definition in SE24.
  In the "Parameters" tab, add a parameter.
  Mark this parameter as the Return parameter (there is a checkbox or a column to mark it as return).
  Specify the data type of the return parameter.
  Save and activate.
  
  
  
  Or change the method to a subroutine method:
  
  If the method is not supposed to return a value, uncheck the "Function" checkbox.
  Remove any return parameter if present.
  Save and activate.
  
  
  
  
  Related Information
  
  Transaction: SE24 (Class Builder)
  ABAP Documentation: Look for "Methods" and "Return parameters" in ABAP Objects documentation.
  SAP Note: No specific SAP Note is usually required; this is a syntax/definition error.
  ABAP Keyword: METHOD ... RETURNING VALUE(...)
  
  
  Example
  CLASS lcl_example DEFINITION.
    PUBLIC SECTION.
      METHODS get_value RETURNING VALUE(rv_value) TYPE i.
  ENDCLASS.
  
  CLASS lcl_example IMPLEMENTATION.
    METHOD get_value.
      rv_value = 42.
    ENDMETHOD.
  ENDCLASS.
  
  Here, get_value is a function method with a return parameter rv_value.
  If you omit the RETURNING VALUE(rv_value) TYPE i part, and still mark the method as function, you get WER154.
  
  
  Summary
  
  
  
  Cause
  Solution
  
  
  
  
  Method declared as function method but no return parameter defined
  Add a return parameter or change method to subroutine method
  
  
  
  
  If you provide the method definition or the context where the error occurs, I can help you fix it specifically.