How To Fix FKKINV338 - Reversal reason &1 for reversal of invoicing documents is unknown

FKKINV338 - Overview

• Message type: E = Error

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

• Message number: 338

• Message text: Reversal reason &1 for reversal of invoicing documents is unknown

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

FKKINV338 - Details

• The SAP error message FKKINV338 indicates that there is an issue with the reversal of invoicing documents in the SAP system. Specifically, it states that the reversal reason provided is unknown or not defined in the system. This error typically occurs in the context of contract accounts receivable and payable (FI-CA) when trying to reverse an invoice.
  
  Cause:
  
  Invalid Reversal Reason: The reversal reason specified in the reversal process does not exist in the system or is not configured correctly.
  
  Configuration Issues: The configuration for the reversal reasons in the system may not be set up properly, leading to the system not recognizing the specified reason.
  Authorization Issues: The user may not have the necessary authorizations to perform the reversal with the specified reason.
  Data Integrity Issues: There may be inconsistencies or missing data in the invoicing documents that prevent the reversal from being processed.
  
  
  Solution:
  
  
  Check Reversal Reason: Verify that the reversal reason you are using