How To Fix FKKBIX2451 - Exception reason &1 does not match processing rule 3 for schema &2

FKKBIX2451 - Overview

• Message type: E = Error

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

• Message number: 451

• Message text: Exception reason &1 does not match processing rule 3 for schema &2

What causes this issue?

<DS:DE.BIT_DCPROCRULE_KK>Processing rule</> 3 requires maintenance of an
<DS:DE.BITEXCREASON_KK>exception reason</> for the duplicate check
schema.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

FKKBIX2451 - Details

• The SAP error message FKKBIX2451 indicates that there is a mismatch between the exception reason specified in the processing of a financial document and the processing rules defined in the schema for that document. This typically occurs in the context of financial accounting, particularly when dealing with payment processing or invoice verification.
  
  Cause:
  The error arises when:
  
  An exception reason (like a specific code or identifier that indicates why a document is being processed differently) is not aligned with the rules defined in the schema for processing that type of document.
  The schema (which defines how different types of documents should be processed) does not recognize the exception reason being used, leading to a conflict.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Exception Reason: Verify the exception reason being used in the transaction. Ensure that it is valid and correctly entered.
  
  
  Review Processing Rules: Examine the processing rules defined in the schema (transaction