How To Fix FL340 - Identical import/export parameters can refer only to reference field

FL340 - Overview

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 340

• Message text: Identical import/export parameters can refer only to reference field

What causes this issue?

You assigned a reference structure to import/export parameters of the
same name in your function module. Only reference fields are allowed
here.

System Response

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

How to fix this error?

Assign one reference field (without hyphen) to import/export parameters
of the same name.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FL340 - Identical import/export parameters can refer only to reference field ?

  The SAP error message FL340, which states "Identical import/export parameters can refer only to reference field," typically occurs in the context of ABAP programming, particularly when dealing with function modules or methods that have import and export parameters.
  
  Cause:
  This error arises when you have defined multiple import or export parameters in a function module or method that have the same name. In ABAP, when you declare parameters with identical names, the system expects them to refer to a single reference field. If they are not defined as reference fields, the system cannot determine which parameter to use, leading to this error.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Rename Parameters: Ensure that all import and export parameters have unique names. This is the most straightforward solution. For example, if you have two parameters named PARAM, rename them to PARAM1 and PARAM2.
  
  
  Use Reference Fields: If you need to keep the same