How To Fix FKKBIX2029 - 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: 029

• 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&, there is an additional item being transferred, 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.

System Response

The treatment of the item being transferred is based on
<DS:DE.CIT_DCPROCRULE_KK>processing rule</> &v4&.
The processing rule was specified in the <DS:DE.CIT_DCFUNCNAME_KK>
function module</> entered in schema &v2&.

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 FKKBIX2029 - Consumption item &1 is a duplicate according to check schema &2 ?

  The SAP error message FKKBIX2029 indicates that there is a duplicate consumption item in the context of a check schema during the processing of a financial transaction, typically related to the posting of consumption items in the SAP system. This error often arises in the context of the SAP Flexible Real Estate Management (RE-FX) module or similar financial applications.
  Cause:
  The error occurs when the system detects that a consumption item (e.g., a rental or service charge) has been entered more than once for the same period or transaction, violating the uniqueness constraints defined in the check schema. This can happen due to:
  
  Duplicate Entries: The user may have inadvertently entered the same consumption item multiple times.
  Data Migration Issues: If data was migrated from another system, duplicates may have been introduced.
  Configuration Issues: The check schema may be configured in a way that does not allow for certain types of duplicates, leading to this error.
  
  Solution:
  To resolve the FKKBIX2029 error, you can take the following steps:
  
  
  Check for Duplicates:
  
  Review the entries for the consumption item in question. Look for any duplicate entries in the relevant transaction or document.
  Use transaction codes like FBL1N (Vendor Line Item Display) or FBL3N (G/L Account Line Item Display) to check for duplicates.
  
  
  
  Correct the Entries:
  
  If duplicates are found, delete or correct the duplicate entries to ensure that each consumption item is unique for the specified period.
  
  
  
  Review Check Schema:
  
  Check the configuration of the check schema (transaction code RECN) to understand the rules that are causing the duplication error. Adjust the schema if necessary to allow for valid entries.
  
  
  
  Data Migration Review:
  
  If the issue arose after a data migration, review the migration process to ensure that it correctly handled duplicates and that the data integrity is maintained.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the FKKBIX2029 error for any specific guidance or updates that may apply to your version of SAP.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. They may provide insights based on the specific configuration and version of your SAP system.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes for checking entries and configurations, such as RECN for Real Estate Management, FBL1N, FBL3N, and others.
  SAP Notes: Search for SAP Notes related to FKKBIX2029 for any patches or updates that may address known issues.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, providing additional insights or solutions.
  
  By following these steps, you should be able to identify and resolve the cause of the FKKBIX2029 error in your SAP system.