How To Fix FKKINV494 - Reversal of bill.doc. &1 not allowed; discount doc. &2 already exists

FKKINV494 - Overview

• Message type: E = Error

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

• Message number: 494

• Message text: Reversal of bill.doc. &1 not allowed; discount doc. &2 already exists

What causes this issue?

With the billing document to be reversed, discount base items were
created that were already billed with a discount document.

System Response

The system does not allow the reversal of billing documents, if the
billed items for these documents were already used for calculating a
discount.

How to fix this error?

To be able to reverse the billing document, you first have to reverse
the discount document.

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.

FKKINV494 - Details

• The SAP error message FKKINV494 indicates that a reversal of a billing document is not allowed because a discount document already exists for that billing document. This typically occurs in the context of the SAP Convergent Invoicing (CI) or Contract Accounts Receivable and Payable (FI-CA) modules.
  
  Cause:
  
  Existing Discount Document: The primary cause of this error is that a discount document has already been created for the billing document you are trying to reverse. In SAP, certain financial documents are interlinked, and the existence of a discount document can prevent the reversal of the original billing document.
  Document Status: The status of the billing document may also play a role. If the document is in a status that does not allow for reversals (e.g., already processed or settled), this error may occur.
  Configuration Settings: There may be specific configuration settings in your SAP system that restrict the reversal of billing documents under certain conditions.
  
  
  Solution:
  
  
  Check