How To Fix FKKBIX2026 - 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: 026

• 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&, a <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.
In addition, the reversal indicator is set for the already existing
item. Therefore, the item being transferred is stored in the table of
<DS:DE.CITSTATUS_KK>raw data</>, in order to make it possible to
transfer this item after the original item is reversed.

System Response

The system treats the item being transferred in this way based on
<DS:DE.CIT_DCPROCRULE_KK>processing rule</> 2.

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 FKKBIX2026 - Consumption item &1 is a duplicate according to check schema &2 ?

  The SAP error message FKKBIX2026 indicates that there is a duplicate consumption item in the system according to the specified check schema. This error typically occurs in the context of financial accounting, particularly when dealing with consumption items in the context of billing or invoicing.
  Cause:
  The error is triggered when the system detects that a consumption item (identified by &1) is already present in the billing document or invoice according to the rules defined in the check schema (&2). This can happen due to:
  
  Duplicate Entries: The same consumption item has been entered multiple times in the billing document.
  Incorrect Configuration: The check schema may be configured in a way that does not allow for certain duplicates, leading to this error.
  Data Entry Errors: Manual data entry mistakes can lead to the same item being added more than once.
  
  Solution:
  To resolve the FKKBIX2026 error, you can take the following steps:
  
  
  Check for Duplicates:
  
  Review the billing document or invoice to identify if the consumption item has been entered more than once. If so, remove the duplicate entry.
  
  
  
  Review Check Schema:
  
  Analyze the check schema configuration to understand the rules that are causing the duplication error. You may need to adjust the schema if it is too restrictive or not aligned with your business processes.
  
  
  
  Data Validation:
  
  Implement validation checks during data entry to prevent duplicates from being created in the first place.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on the check schema and how it applies to your scenario.
  
  
  
  Contact Support:
  
  If the issue persists and you cannot identify the cause, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  
  
  Related Information:
  
  Check Schema: This is a set of rules that define how the system checks for duplicates and other conditions during the billing process. Understanding how to configure and modify check schemas can help prevent similar errors in the future.
  Transaction Codes: Familiarize yourself with relevant transaction codes (e.g., VF01 for billing document creation) to navigate the system effectively.
  SAP Notes: Check for any SAP Notes related to FKKBIX2026 for additional insights or patches that may address known issues.
  
  By following these steps, you should be able to identify the cause of the FKKBIX2026 error and implement a solution to resolve it.