How To Fix FKKBIX2028 - Consumption item &1 is a duplicate according to check schema &2

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 028

• Message text: Consumption item &1 is a duplicate according to check schema &2

What causes this issue?

For the consumption item being transferred of business partner &v3& with
ID &v1&, an unreversed <DS:TX.FKKBIX_CIT>consumption item</> already
exists, which, according to the <DS:DE.CIT_DCFIELD_KK>comparison fields
</> entered in <DS:DE.CIT_DCSCHEMA_KK>check schema</> &v2& for the
duplicate check, is identical with the item being transferred.
The item was transferred nonetheless, since the item was released for
rating (see <DS:DE.CIT_DUPREC_KK>Consumption Was Loaded Twice</>).

System Response

The consumption item was transferred.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

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 FKKBIX2028 - Consumption item &1 is a duplicate according to check schema &2 ?

  The SAP error message FKKBIX2028 indicates that there is a duplicate consumption item in the system according to the specified check schema. This error typically occurs during the processing of financial documents, particularly in the context of consumption items in the SAP system.
  Cause:
  The error arises when the system detects that a consumption item (identified by &1) is already present in the system for the same check schema (identified by &2). This can happen due to:
  
  Duplicate Entries: The same consumption item has been entered multiple times in the same document or across different documents.
  Incorrect Configuration: The check schema may be configured in a way that does not allow for duplicate consumption items.
  Data Migration Issues: If data has been migrated from another system, duplicates may have been inadvertently created.
  
  Solution:
  To resolve the FKKBIX2028 error, you can take the following steps:
  
  
  Identify Duplicates:
  
  Check the document or transaction where the error occurred to identify the duplicate consumption item.
  Use transaction codes like FB03 (Display Document) or FBL1N (Vendor Line Item Display) to review the entries.
  
  
  
  Remove or Adjust Duplicates:
  
  If duplicates are found, you may need to delete or adjust the duplicate entry to ensure that only one instance of the consumption item exists for the specified check schema.
  If the duplicate is in a document that has already been posted, you may need to reverse or adjust the document.
  
  
  
  Review Check Schema Configuration:
  
  If the issue persists, review the configuration of the check schema in the system. Ensure that it is set up correctly to handle consumption items without allowing duplicates.
  You can check the configuration in the Customizing settings under Financial Accounting (FI) > Accounts Receivable and Accounts Payable > Business Transactions > Incoming Payments > Check Management.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help notes related to the FKKBIX2028 error for additional insights and troubleshooting steps.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance. They may provide specific guidance based on your system configuration and version.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FB03, FBL1N, and FBL3N for reviewing financial documents and line items.
  Check Schema: Understand how check schemas are defined and used in your organization, as this can impact how consumption items are processed.
  Data Integrity: Regularly monitor and maintain data integrity in your SAP system to prevent issues related to duplicates.
  
  By following these steps, you should be able to identify and resolve the FKKBIX2028 error effectively.