How To Fix TK668 - Changes not possible (task displayed)

SAP Error Message - Details

• Message type: E = Error

• Message class: TK - Transport Organizer

• Message number: 668

• Message text: Changes not possible (task displayed)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message TK668 - Changes not possible (task displayed) ?

  The SAP error message TK668 ("Changes not possible (task displayed)") typically occurs in the context of SAP Project System (PS) or when working with tasks in a project. This error indicates that the system is preventing changes to a task because it is currently displayed or in a state that does not allow modifications.
  Causes:
  
  Task Display Mode: The task is opened in display mode, which does not allow any changes to be made.
  Authorization Issues: The user may not have the necessary authorizations to make changes to the task.
  Task Status: The task may be in a status that prohibits changes (e.g., completed, closed).
  Locking Mechanism: The task might be locked by another user or process, preventing modifications.
  System Settings: Certain system settings or configurations may restrict changes to tasks under specific conditions.
  
  Solutions:
  
  Switch to Change Mode: Ensure that you are in change mode rather than display mode. Look for an option to switch to change mode in the SAP GUI.
  Check Authorizations: Verify that you have the necessary authorizations to modify the task. You may need to contact your SAP security administrator to check your roles and permissions.
  Review Task Status: Check the status of the task. If it is completed or closed, you may need to reopen it or change its status before making modifications.
  Release Locks: If the task is locked, identify the user or process that has locked it. You can use transaction codes like SM12 to view and manage locks.
  Consult Documentation: Review any relevant documentation or guidelines specific to your organization’s SAP implementation to understand any additional restrictions that may apply.
  Contact Support: If the issue persists, consider reaching out to your SAP support team for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  CJ20N: Project Builder
  CJ02: Change Project
  CJ03: Display Project
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Forums: Engage with SAP community forums or user groups for shared experiences and solutions from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify the cause of the TK668 error and take appropriate action to resolve it.