How To Fix FKKINV599 - Name &1 for the charge/discount key is already assigned

FKKINV599 - Overview

• Message type: E = Error

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

• Message number: 599

• Message text: Name &1 for the charge/discount key is already assigned

What causes this issue?

The name you entered for the charge/discount key (&V1&) is already being
use as a key for a <DS:DE.DISCKEY_KK>discount/charge on billable items
</>.

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?

Choose another name for the charge/discount key.

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 FKKINV599 - Name &1 for the charge/discount key is already assigned ?

  The SAP error message FKKINV599 indicates that there is an issue with the charge or discount key that you are trying to assign in the context of invoicing or billing in the SAP system. Specifically, the message states that the name (or identifier) for the charge/discount key is already assigned to another object, which prevents you from using it for the current transaction.
  
  Cause:
  
  Duplicate Assignment: The charge/discount key you are trying to use is already assigned to another billing document, customer, or contract.
  
  Configuration Issues: There may be configuration settings in the SAP system that restrict the use of certain charge/discount keys.
  Data Integrity: There might be data integrity issues in the database where the charge/discount key is incorrectly linked to multiple objects.
  
  
  Solution:
  
  
  Check Existing Assignments: 
  
  Use transaction codes like FKKINV or FBL5N to check where the charge/discount key is currently assigned. Look for any existing invoices or contracts that may be using the