How To Fix SCWN614 - Parameter &1 for function module &2 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: SCWN - Messages Note installation and management

• Message number: 614

• Message text: Parameter &1 for function module &2 already exists

What causes this issue?

You are attempting to create a parameter that already exists for this
function module.

System Response

The function terminates.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SCWN614 - Parameter &1 for function module &2 already exists ?

  The SAP error message SCWN614 indicates that there is an attempt to create or define a parameter in a function module that already exists. This typically occurs during the development or modification of function modules in the SAP system.
  Cause:
  The error is caused by one of the following reasons:
  
  Duplicate Parameter Definition: You are trying to define a parameter (input, output, or changing) in a function module that has the same name as an existing parameter.
  Incorrect Function Module Modification: If you are modifying an existing function module, you might inadvertently try to add a parameter that already exists in the function module's interface.
  Copying Function Modules: If you copied a function module and did not change the parameter names, this error can occur.
  
  Solution:
  To resolve the SCWN614 error, you can follow these steps:
  
  
  Check Parameter Names: Review the parameters defined in the function module. Ensure that the parameter you are trying to add does not already exist. You can do this by:
  
  Opening the function module in the ABAP Workbench (transaction SE37).
  Checking the "Import", "Export", and "Changing" parameters sections for duplicates.
  
  
  
  Rename the Parameter: If you find that the parameter name you are trying to use already exists, consider renaming it to something unique.
  
  
  Modify Existing Parameter: If the parameter you are trying to add is meant to replace an existing one, you may need to modify the existing parameter instead of adding a new one.
  
  
  Check for Inherited Parameters: If the function module is part of a function group or is being used in a context where parameters are inherited, ensure that you are not duplicating parameters from a parent function module.
  
  
  Transport Requests: If this error occurs during a transport request, ensure that the transport does not contain conflicting changes that could lead to this error.
  
  
  Related Information:
  
  Function Module: A function module is a reusable piece of code in SAP that can be called from other programs or function modules.
  ABAP Workbench: The ABAP Workbench (transaction SE80) is the development environment for creating and modifying ABAP programs, function modules, and other objects.
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message, as there may be known issues or fixes provided by SAP.
  
  By following these steps, you should be able to resolve the SCWN614 error and successfully define the parameters in your function module.