How To Fix KO496 - You cannot change maintained fields

KO496 - Overview

• Message type: E = Error

• Message class: KO - Master data for CO orders

• Message number: 496

• Message text: You cannot change maintained fields

What causes this issue?

You changed screen fields that cannot be changed with this transaction.
This can be done with a WEB transaction, as the fields affected cannot
automatically be excluded as ready for input on an HTML page.

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

System Response

The fields that were maintained, but are not changeable are reset to
their original status.

How to fix this error?

This transaction cannot be used for changing the following fields:
Order category ( order_master-order_catg )
Order type ( order_master-order_type )
Controlling area ( order_master-co_area )
Reference order ( order_master-reference_order )
Entered by ( order_master-entered_by )
Entered on ( order_master-enter_date )
Time entered ( order_master-enter_time )
Last changed by ( order_master-changed_by )
Date changed ( order_master-change_date )
Time changed ( order_master-change_time )
Actual release date ( order_master-date_release )
Actual technical completion date ( order_master-date_completion )
Actual closing date ( order_master-date_close )
Deletion flag ( order_master-deletion_flag )
Phase: Create order ( order_master-phase_create )
Phase: Release order ( order_master-phase_release )
Phase: Technical completion of order ( order_master-phase_completion )
Phase: Close order ( order_master-phase_close )
Order status ( order_master-order_status )
Date of last status change ( order_master-last_stat_change )
Disallowed transaction group ( order_master-disallowed_t_grp )
Logical system ( order_master-logsystem bisher )
Current order status ( order_master-reached_status )

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KO496 - You cannot change maintained fields ?

  The SAP error message KO496 ("You cannot change maintained fields") typically occurs in the context of controlling (CO) module transactions, particularly when dealing with cost centers, internal orders, or other master data that has been maintained in the system. This error indicates that you are trying to change fields that are not allowed to be modified due to the current status of the object or the settings in the system.
  
  Cause:
  
  Field Status: The fields you are trying to change are set as "maintained" in the configuration, meaning they are locked for editing once certain conditions are met (e.g., after a period has been closed).
  Document Status: The document or object you are trying to modify may be in a status that does not allow changes (e.g., posted documents).
  Authorization Issues: You may not have the necessary authorizations to change certain fields.
  System Configuration: The system may be configured to prevent changes to certain fields