How To Fix KT256 - Plan integration with cost center accoounting can no longer be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: KT - RK Message Table Maintenance

• Message number: 256

• Message text: Plan integration with cost center accoounting can no longer be changed

What causes this issue?

The <ZH>Planning integration with Cost Center Accounting</> indicator
can only be set as long as no plan data exists for orders with
integrated planning in the controlling area.
The SAP System determined that plan data for orders with integrated
planning exists on the controlling area/version/fiscal year (&V1&/&V2&/
&V3&) level. You cannot change the indicator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KT256 - Plan integration with cost center accoounting can no longer be changed ?

  The SAP error message KT256, which states "Plan integration with cost center accounting can no longer be changed," typically occurs in the context of planning and budgeting within SAP's Controlling (CO) module. This error indicates that the integration settings for planning with cost center accounting have been locked or cannot be modified due to certain conditions.
  Causes:
  
  Period Locking: The planning period may be locked, preventing any changes to the integration settings.
  Completed Planning Cycle: If the planning cycle has been completed or closed, changes to the integration settings will not be allowed.
  Authorization Issues: The user may not have the necessary authorizations to make changes to the planning integration settings.
  Configuration Settings: The system configuration may have been set in such a way that it restricts changes to the integration settings after a certain point.
  Data Consistency: There may be existing data that conflicts with the proposed changes, leading to a restriction on modifying the integration.
  
  Solutions:
  
  Check Period Status: Verify if the planning period is open. If it is closed, you may need to open it again or wait until the next planning cycle.
  Review Planning Status: Ensure that the planning cycle is not completed. If it is, you may need to revert to a previous state or create a new planning version.
  Authorization Check: Confirm that you have the necessary authorizations to make changes to the planning integration settings. If not, contact your SAP security administrator.
  Consult Configuration: Review the configuration settings in the SAP system to understand if there are restrictions in place. This may require assistance from a functional consultant.
  Data Consistency Check: Ensure that there are no inconsistencies in the data that would prevent changes. This may involve checking for existing planning data that could conflict with the changes you want to make.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like KP06 (Cost Center Planning) or KP26 (Activity Type Planning) to review and adjust planning data.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Documentation: Refer to SAP documentation for detailed information on planning integration and cost center accounting to understand the implications of changes.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in the Controlling module for further assistance.