How To Fix FL321 - Do not use import and export parameters of the same name

FL321 - Overview

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 321

• Message text: Do not use import and export parameters of the same name

What causes this issue?

You have attempted to create or change a parameter that is defined as
an import or export parameter. As of the next Release, this is no
longer supported.

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

System Response

The process has been terminated.

How to fix this error?

Use changing parameters instead. If an urgent change is made to an
existing parameter, use the old version of the Workbench.

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 FL321 - Do not use import and export parameters of the same name ?

  The SAP error message FL321, which states "Do not use import and export parameters of the same name," typically occurs in ABAP function modules or methods when there is a naming conflict between import and export parameters. This can lead to ambiguity in the function's interface, making it unclear whether a parameter is being passed in or returned.
  
  Cause:
  The error arises when:
  
  A function module or method defines both an import parameter and an export parameter with the same name.
  This can create confusion in the code, as it is not clear whether the parameter is being used for input or output.
  
  
  Solution:
  To resolve this error, you should:
  
  
  Rename Parameters: Change the name of either the import or export parameter so that they are distinct. This will eliminate the ambiguity and comply with SAP's naming conventions.
  For example, if you have:
  IMPORTING
    iv_parameter TYPE string,
  EXPORTING
    ev_parameter TYPE string.
  You could rename them to:
  IMPORTING
    iv_input_parameter TYPE