How To Fix FKKBIX2121 - The billable items that are to be reversed are already invoiced

FKKBIX2121 - Overview

• Message type: E = Error

• Message class: FKKBIX2 - Billing in Contract Accounts Receivable and Payable

• Message number: 121

• Message text: The billable items that are to be reversed are already invoiced

What causes this issue?

The billable items to be reversed are already invoiced.

System Response

The reversal of the billable items is not permitted.

How to fix this error?

Reverse the invoicing document or the billing 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message FKKBIX2121 - The billable items that are to be reversed are already invoiced ?

  The SAP error message FKKBIX2121 indicates that you are attempting to reverse billable items that have already been invoiced. This situation typically arises in the context of billing and invoicing processes within SAP, particularly in modules like SAP FI (Financial Accounting) or SAP SD (Sales and Distribution).
  
  Cause:
  The error occurs because the system has detected that the items you are trying to reverse have already been included in an invoice. In SAP, once an item is invoiced, it cannot be reversed directly without following specific procedures. This is a safeguard to maintain the integrity of financial records and prevent inconsistencies.
  
  Solution:
  To resolve this error, you can consider the following steps:
  
  
  Check Invoice Status: Verify the status of the invoice associated with the billable items. If the invoice is already posted, you may need to reverse the invoice first before attempting to reverse the billable items.
  
  
  Reverse the Invoice: If the invoice needs to be