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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message FKKINV663 - Partner settlement rule for invoicing unit is not unique ?

  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 in the SAP system.
  Navigate to the relevant transaction (e.g., SPRO -> Financial Accounting -> Contract Accounts Receivable and Payable -> Basic Functions -> Partner Settlement).
  Review the existing settlement rules for the invoicing unit and partner in question. Look for duplicates or conflicting entries.
  
  
  
  Remove Duplicates:
  
  If you find duplicate settlement rules, you will need to either delete or modify them to ensure that there is only one unique rule for the invoicing unit and partner combination.
  
  
  
  Check Master Data:
  
  Verify the master data for the partners and invoicing units involved. Ensure that there are no inconsistencies or duplicates that could lead to this error.
  
  
  
  Test the Changes:
  
  After making the necessary adjustments, test the invoicing process again to ensure that the error no longer occurs.
  
  
  
  Consult Documentation:
  
  If the issue persists, consult SAP documentation or reach out to SAP support for further assistance. They may provide additional insights or updates related to this error.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like FBL1N (Vendor Line Item Display) or FBL5N (Customer Line Item Display) to check the line items related to the partners.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide patches/updates.
  Testing Environment: If possible, replicate the issue in a testing environment to analyze the problem without affecting production data.
  
  By following these steps, you should be able to identify and resolve the cause of the FKKINV663 error in your SAP system.