How To Fix FL684 - Modified function modules may not be reassigned

FL684 - Overview

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 684

• Message text: Modified function modules may not be reassigned

What causes this issue?

The function module contains modifications or note corrections and
cannot be moved.
<ZH>Background:</>
Note Assistant (SNOTE) does not support moves of function modules.
Manual moves of SAP function modules are blocked by Function Builder if
any modifications or older note corrections to the module exist in the
system.
Moves of SAP function modules in customer systems risk making imports of
SAP support packages impossible.
The transport tool R3TRANS ends the import with ?return code: ===> 8? if
the delivered function group and the include number do not match the
function group and include number in the target system. This problem
occurs when a delivery contains the moved function module as a
standalone object (LIMU FUNC) and the full affected function groups
(R3TR FUGR <(><<)>old function group> and R3TR FUGR <(><<)>new function
group>) are not delivered.

System Response

The action is canceled.

How to fix this error?

Reorganizations of SAP function groups can be delivered only in SAP
support packages or in system upgrades.
If you have already moved a function module, consider undoing this
action.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FL684 - Modified function modules may not be reassigned ?

  The SAP error message FL684 ("Modified function modules may not be reassigned") typically occurs when there is an attempt to reassign a modified function module in the SAP system. This can happen during various operations, such as transport requests or when trying to activate or reassign function modules that have been modified.
  
  Cause:
  
  Modified Function Module: The function module in question has been modified in a way that is not compatible with the reassignment process. This usually means that the function module has been changed in a way that SAP does not allow it to be reassigned to another package or transport request.
  Transport Request Issues: If you are trying to transport a modified function module, and the transport request does not include the necessary changes or is not properly configured, this error can occur.
  Development Class: The function module may belong to a development class that does not allow reassignment of modified objects.
  
  
  Solution:
  
  Check