How To Fix KQ312 - Maintenance after deactivating &1 makes cost estimates incomparable

SAP Error Message - Details

• Message type: E = Error

• Message class: KQ - Error Messages for Customizing Product Costing

• Message number: 312

• Message text: Maintenance after deactivating &1 makes cost estimates incomparable

What causes this issue?

If cost estimates for cost component structure &v1& have been saved,
the following actions will result in a structure break in the update of
the cost component splits (cost component itemization):

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

Changing cost components
Deleting cost components
Deleting cost component structures
Changing the assignment of cost elements to the cost components
Changing the assignment of the cost component structure to the
organizational units
Changing the transfer structure
Cost estimates updated before the change will then no longer be
comparable with cost estimates updated after the change.

How to fix this error?

You can create new cost components for a cost component structure or
change cost components from "variable" to "fixed and variable" without
restrictions.

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 KQ312 - Maintenance after deactivating &1 makes cost estimates incomparable ?

  The SAP error message KQ312 indicates that there is an issue with cost estimates in the system after deactivating a particular maintenance activity or function. This error typically arises in the context of cost accounting and controlling, particularly when dealing with cost estimates for materials or production processes.
  Cause:
  The error message KQ312 is triggered when a cost estimate is being compared or processed after a maintenance activity has been deactivated. This can happen for several reasons:
  
  Deactivation of Costing Variants: If a costing variant or a specific costing method has been deactivated, any cost estimates that were created using that variant may become invalid or incomparable.
  Changes in Master Data: Changes in the master data (like material master, BOM, routing, etc.) that affect cost estimates can lead to this error if the relevant data is no longer available or has been altered.
  Inconsistent Costing Data: If there are inconsistencies in the costing data due to deactivation of certain features or settings, it can lead to this error.
  
  Solution:
  To resolve the KQ312 error, consider the following steps:
  
  Re-activate the Deactivated Maintenance: If possible, re-activate the maintenance activity or costing variant that was deactivated. This may restore the ability to compare cost estimates.
  Check Costing Variants: Ensure that the costing variants used for the cost estimates are active and correctly configured. You may need to review the settings in the controlling area.
  Review Master Data: Check the relevant master data for any inconsistencies or changes that may have occurred. Ensure that all necessary data is available and correctly maintained.
  Recreate Cost Estimates: If the above steps do not resolve the issue, you may need to recreate the cost estimates using the current active settings and data.
  Consult Documentation: Review SAP documentation or notes related to cost estimates and the specific error message for additional guidance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CK11N (Create Cost Estimate), CK40N (Change Cost Estimate), and CK24 (Display Cost Estimate).
  SAP Notes: Check for any SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to perform actions related to cost estimates and maintenance activities.
  Testing in a Sandbox Environment: If possible, replicate the issue in a test or sandbox environment to better understand the cause and test potential solutions without affecting production data.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a consultant who specializes in SAP Controlling (CO) for further assistance.