How To Fix STC_TM018 - Unique task &1 is already part of task list &2

SAP Error Message - Details

• Message type: E = Error

• Message class: STC_TM - Task List Manager Messages

• Message number: 018

• Message text: Unique task &1 is already part of task list &2

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 STC_TM018 - Unique task &1 is already part of task list &2 ?

  The SAP error message STC_TM018 indicates that a unique task is already part of a task list. This typically occurs when you are trying to add a task to a task list that already contains that task, which violates the uniqueness constraint for tasks within a task list.
  Cause:
  
  Duplicate Task: The task you are trying to add is already included in the specified task list.
  Task List Configuration: There may be a misconfiguration in the task list where the same task is inadvertently included multiple times.
  
  Solution:
  
  Check Task List: Review the task list to confirm whether the task you are trying to add is already present. You can do this by navigating to the task list in the SAP system and checking its contents.
  Remove Duplicate: If the task is already present and you still want to modify the task list, you may need to remove the existing task before adding it again.
  Modify Task List: If you need to change the task, consider modifying the existing task instead of adding a new one.
  Consult Documentation: Refer to SAP documentation or help resources for specific instructions on managing task lists and tasks.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like STC01 (for task management) or STC02 (for task lists) to manage and view tasks and task lists.
  SAP Notes: Check for any relevant SAP Notes that might address this issue or provide additional guidance.
  User Authorization: Ensure that you have the necessary authorizations to modify task lists and tasks in the system.
  
  If the problem persists after following these steps, consider reaching out to your SAP Basis or technical support team for further assistance.