How To Fix FKKBIX687 - Field &1 in include &2 is not used in any billable item class

FKKBIX687 - Overview

• Message type: E = Error

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

• Message number: 687

• Message text: Field &1 in include &2 is not used in any billable item class

What causes this issue?

The result of the check of the work structures is that the &v1& field in
customer include &v2& is not used in any billable item class.

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?

Fields that are not used place an unnecessary burden on the working
memory of processes that process billable items. To reduce the need for
working memory, you can remove the &v1& field from structure &v2& in the
Data Dictionary, as long as the field is not used in any customer
programs.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

FKKBIX687 - Details

• The SAP error message FKKBIX687 indicates that a specific field (denoted as &1) in a particular include (denoted as &2) is not being utilized in any billable item class. This error typically arises in the context of billing or invoicing processes within SAP, particularly in the Contract Accounts Receivable and Payable (FI-CA) module.
  
  Cause:
  
  Field Configuration: The field specified in the error message is likely configured in the system but is not linked to any billable item class. This can happen if the field was added or modified in the configuration but not properly associated with the relevant billing item classes.
  Missing Customization: If there have been recent changes or customizations in the billing process, it’s possible that the necessary adjustments to link the field to the billable item class were not made.
  Data Inconsistency: There may be inconsistencies in the data or configuration settings that prevent the system from recognizing the field as