How To Fix TFC0423 - Tasks cannot be scheduled on basis of task list status

TFC0423 - Overview

• Message type: E = Error

• Message class: TFC0 - Messages in FC

• Message number: 423

• Message text: Tasks cannot be scheduled on basis of task list status

What causes this issue?

Only tasks from task lists with the status <ZK>Released </>or <ZK>Active
</>can be scheduled or executed.

System Response

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

How to fix this error?

If the task list does not have the status <ZK>Released</>, release the
task list.

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 TFC0423 - Tasks cannot be scheduled on basis of task list status ?

  The SAP error message TFC0423, which states "Tasks cannot be scheduled on basis of task list status," typically occurs in the context of production planning and scheduling within SAP. This error indicates that the system is unable to schedule tasks because the status of the task list does not allow for scheduling operations.
  Causes:
  
  Task List Status: The task list may be in a status that does not permit scheduling. For example, it could be marked as "inactive" or "not released."
  Missing Dependencies: There may be dependencies or prerequisites that have not been met, preventing the scheduling of tasks.
  Incorrect Configuration: The configuration settings for the task list or the scheduling parameters may not be set correctly.
  Locked Objects: The task list or related objects may be locked by another user or process, preventing scheduling.
  
  Solutions:
  
  
  Check Task List Status: 
  
  Navigate to the task list in question and check its status. Ensure that it is set to