How To Fix FKKINV639 - Preliminary invoice &1 already processed; reversal not possible

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 639

• Message text: Preliminary invoice &1 already processed; reversal not possible

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FKKINV639 - Preliminary invoice &1 already processed; reversal not possible ?

  The SAP error message FKKINV639 indicates that a preliminary invoice (or pro forma invoice) has already been processed, and therefore, a reversal of that invoice is not possible. This error typically occurs in the context of the SAP Convergent Invoicing (CI) or Contract Accounts Receivable and Payable (FI-CA) modules.
  Cause:
  
  Invoice Already Processed: The preliminary invoice has already been finalized or posted, which means it cannot be reversed as it is no longer in a preliminary state.
  Status of the Invoice: The invoice may have been moved to a status that does not allow for reversal, such as being part of a billing document that has been settled or cleared.
  System Configuration: There may be specific configurations or settings in the system that prevent the reversal of certain types of invoices.
  
  Solution:
  
  Check Invoice Status: Verify the status of the preliminary invoice. If it has been finalized, you may need to look for alternative ways to correct the transaction, such as creating a credit memo or a new invoice.
  Use Correct Transaction: If you need to reverse a preliminary invoice, ensure you are using the correct transaction code or process that allows for the reversal of preliminary invoices.
  Consult Documentation: Review SAP documentation or help files related to invoice processing and reversal to ensure you are following the correct procedures.
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert who can provide guidance based on your specific system configuration and business processes.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FBL5N (Customer Line Item Display) or F-28 (Post Incoming Payments) to check the status of invoices.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide additional insights or patches that could resolve the issue.
  User Authorization: Ensure that you have the necessary authorizations to perform invoice reversals or adjustments in the system.
  
  By following these steps, you should be able to address the error message FKKINV639 effectively.