How To Fix FKKINV663 - Partner settlement rule for invoicing unit is not unique

FKKINV663 - Overview

• Message type: E = Error

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

• Message number: 663

• Message text: Partner settlement rule for invoicing unit is not unique

What causes this issue?

You want to create a partner settlement. However, this invoicing unit
contains source documents to which different <DS:DE.PTSRL_KK>partner
settlement rules</> are assigned. This is not allowed.

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?

Make sure that invoicing units only contain source documents that have
the same partner settlement rule.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

FKKINV663 - Details

• The SAP error message FKKINV663 indicates that there is a problem with the partner settlement rule for an invoicing unit, specifically that it is not unique. This typically occurs in the context of contract accounts receivable and payable (FI-CA) when the system is trying to determine how to settle invoices for a specific partner but finds multiple rules that could apply.
  
  Cause:
  The error is usually caused by one of the following issues:
  
  Duplicate Settlement Rules: There are multiple settlement rules defined for the same invoicing unit and partner combination, leading to ambiguity in determining which rule to apply.
  
  Configuration Issues: The configuration settings for partner settlement rules may not be set up correctly, leading to conflicts.
  Data Integrity Issues: There may be inconsistencies or duplicates in the master data related to partners or invoicing units.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Settlement Rules:
  
  Go to the configuration settings for partner settlement rules