How To Fix FKKBIX2001 - Schema &1 for checking duplicates is not suitable in class &2

FKKBIX2001 - Overview

• Message type: E = Error

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

• Message number: 001

• Message text: Schema &1 for checking duplicates is not suitable in class &2

What causes this issue?

According to <DS:DE.BIT_DCSCHEMA_KK>check schema</> &v1& that is
assigned to <DS:DE.BITCAT_KK>class</> &v2&, duplicate records are to be
returned to the caller as having errors. However, this class uses
<DS:DE.BIT_IFCOMP_KK>interface component</> &v3& that does not support
the return of items with errors.

System Response

The processing of billable items is terminated.

How to fix this error?

Change the configuration of the check schema, or assign a more suitable
check schema to this class.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

FKKBIX2001 - Details

• The SAP error message FKKBIX2001 indicates that there is an issue with the schema used for checking duplicates in the context of the SAP Financial Accounting (FI) module, specifically related to the configuration of the duplicate check for documents. This error typically arises when the system is unable to find a suitable schema for the duplicate check process.
  
  Cause:
  
  Incorrect Schema Configuration: The schema defined for duplicate checks in the system is either not set up correctly or is not compatible with the class of documents being processed.
  Missing or Inactive Schema: The schema might be missing or inactive in the system, leading to the inability to perform the duplicate check.
  Incompatibility with Document Class: The schema may not be suitable for the specific document class being used, which can happen if the schema is designed for a different type of document.
  
  
  Solution:
  
  
  Check Schema Configuration:
  
  Go to the configuration settings for duplicate checks in the SAP