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

SAP Error Message - Details

• 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 Modifications: Review the modifications made to the function module. If the changes are not necessary, consider reverting to the original version or ensuring that the modifications are compatible with reassignment.
  Transport Request: Ensure that the transport request containing the modified function module is correctly configured. You may need to create a new transport request or include the function module in an existing one.
  Reassigning: If you need to reassign the function module, you may need to first remove the modifications or create a new function module that incorporates the necessary changes without conflicting with the reassignment rules.
  Use of SE80/SE37: Use transaction codes SE80 (Object Navigator) or SE37 (Function Module) to check the status of the function module and see if it is locked or if there are any inconsistencies.
  Consult Documentation: Refer to SAP documentation or notes related to the specific function module or error message for additional guidance.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on handling modified function modules.
  Development Guidelines: Familiarize yourself with SAP's guidelines on modifying standard objects, as this can help prevent similar issues in the future.
  Transport Management: Understanding the transport management system in SAP can help you manage changes and avoid conflicts with modified objects.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.