How To Fix FKKINV306 - Incompatible changes made to reversal document

SAP Error Message - Details

• Message type: E = Error

• Message class: FKKINV - Invoicing in Contract Accounts Receivable and Payable

• Message number: 306

• Message text: Incompatible changes made to reversal document

What causes this issue?

In <DS:DE.FBEVE_KK>event</> 2725, impermissible changes were made to the
reversal billing document. This affects structure &V1&.

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?

You can use the event 2725 during reversal and adjustment of billing
documents to change the reversal billing document. For example, you can
change customer-specific fields. However, some changes are not allowed -
for example, adding new items.
Also see the documentation for event 2725 and change your
implementation.

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 FKKINV306 - Incompatible changes made to reversal document ?

  The SAP error message FKKINV306 indicates that there are incompatible changes made to a reversal document in the context of the Contract Accounts Receivable and Payable (FI-CA) module. This error typically arises when there are inconsistencies or issues with the reversal document that prevent it from being processed correctly.
  Cause:
  
  Inconsistent Data: The reversal document may have been altered after it was created, leading to inconsistencies with the original document.
  Document Status: The status of the original document may not allow for a reversal, or the reversal document may be in a status that is not compatible with the original.
  Changes in Key Fields: Changes to key fields (like amounts, dates, or account assignments) in the original document after the reversal was initiated can lead to this error.
  Custom Logic: If there are custom enhancements or logic implemented in the system, they may interfere with the standard reversal process.
  
  Solution:
  
  Check Document Changes: Review the original document and the reversal document for any changes that may have been made after the reversal was initiated. Ensure that no key fields have been altered.
  Recreate the Reversal: If the reversal document is found to be incompatible, it may be necessary to delete the reversal document and recreate it from scratch.
  Review Document Status: Ensure that the original document is in a status that allows for reversal. If the document is already cleared or settled, it may not be possible to reverse it.
  Consult Logs: Check the application logs for more detailed error messages or warnings that can provide additional context on what went wrong.
  SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  Testing in Development: If you suspect custom logic is causing the issue, test the reversal process in a development or quality assurance environment to isolate the problem.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FBL5N (Customer Line Item Display) or FB03 (Display Document) to analyze the documents involved.
  Documentation: Review SAP documentation related to FI-CA and document reversal processes for best practices and guidelines.
  Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  By following these steps, you should be able to identify the cause of the FKKINV306 error and implement a solution to resolve it.