How To Fix TK584 - Cannot change task type to "Unclassified"

TK584 - Overview

• Message type: E = Error

• Message class: TK - Transport Organizer

• Message number: 584

• Message text: Cannot change task type to "Unclassified"

What causes this issue?

You can only change the task type to <LS>Unclassified</> if the task
contains no objects.
This task contains objects.

System Response

The function terminates.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

TK584 - Details

• The SAP error message TK584, which states "Cannot change task type to 'Unclassified'," typically occurs in the context of SAP Project System (PS) or SAP Controlling (CO) when there is an attempt to change the task type of a project task or activity to "Unclassified." This error can arise due to various reasons, and understanding the cause and potential solutions is essential for resolving the issue.
  
  Cause:
  
  
  Task Type Restrictions: The system may have restrictions on changing certain task types based on the current status of the task or project. For example, if the task is already assigned to a specific type or has dependencies, it may not allow changing to "Unclassified."
  
  
  Project Structure: The project structure may not support unclassified tasks. If the project is set up in a way that requires specific task classifications, changing to "Unclassified" may violate these rules.
  
  
  Authorization Issues: The user may not have the necessary authorizations to