How To Fix FKKBIX405 - Billable item class &2 uses processing rule that is not allowed

FKKBIX405 - Overview

• Message type: E = Error

• Message class: FKKBIX - Conv.Inv.: Billing (Invoice Preprocessing)

• Message number: 405

• Message text: Billable item class &2 uses processing rule that is not allowed

What causes this issue?

A <DS:DE.BIT0INS_KK>processing rule</> is assigned to the
<DS:DE.BITCAT_KK>billable item class</> &v2&, but this rule is not
allowed for classes that are based on interface component &v1&.
It is not possible to return incorrect items. Instead they are added as
raw data.

System Response

Class &v2& cannot accept any one-off charges from CRM.

How to fix this error?

Assign one of the following processing rules to the billable item class:
1 ? Add all items as raw data
2 ? Add items with errors as raw data

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message FKKBIX405 - Billable item class &2 uses processing rule that is not allowed ?

  The SAP error message FKKBIX405 indicates that there is an issue with the processing rule associated with a billable item class in the context of billing or invoicing. This error typically arises when the system encounters a billable item class that is configured to use a processing rule that is not permitted or is incorrectly set up.
  
  Cause:
  
  Incorrect Configuration: The billable item class may be configured to use a processing rule that is not valid for the type of transaction being processed.
  Missing or Inactive Processing Rule: The processing rule that the billable item class is trying to use may not exist, or it may be inactive.
  Incompatibility: The processing rule may not be compatible with the specific settings or parameters of the billable item class.
  
  
  Solution:
  
  
  Check Configuration:
  
  Go to the configuration settings for the billable item class in the SAP system.
  Verify that the processing rule assigned to the billable item class is valid and