How To Fix WPS01052 - Task list &2 &3 (type &1) is still used in hierarchies

SAP Error Message - Details

• Message type: E = Error

• Message class: WPS01 - Revision Planning - Task List Hierarchy

• Message number: 052

• Message text: Task list &2 &3 (type &1) is still used in hierarchies

Self-Explanatory Message

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• What is the cause and solution for SAP error message WPS01052 - Task list &2 &3 (type &1) is still used in hierarchies ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WPS01052 Task list &2 &3 (type &1) is still used in hierarchies
  
  Meaning / Cause:
  This error occurs when you try to delete or change a task list (maintenance task list, production task list, or other types) that is still referenced or assigned within one or more task list hierarchies. In SAP Plant Maintenance (PM) or Production Planning (PP), task lists can be organized into hierarchies to represent complex maintenance or production processes. If a task list is part of such a hierarchy, it cannot be deleted or modified in certain ways until it is removed from the hierarchy.
  
  &1 = Task list type (e.g., PM, PP, etc.)  
  &2 = Task list group  
  &3 = Task list number  
  
  
  Cause:
  
  The task list you are trying to delete or modify is still assigned to one or more task list hierarchies.
  SAP prevents deletion or certain changes to avoid inconsistencies or broken references in the hierarchy structure.
  
  
  Solution:
  
  
  Check Task List Hierarchies:
  
  Use transaction IA05 (Display Task List Hierarchy) or IA06 (Change Task List Hierarchy) to find the hierarchies where the task list is used.
  Enter the task list group and number to see all hierarchies referencing it.
  
  
  
  Remove the Task List from Hierarchies:
  
  In transaction IA06, remove the task list from all hierarchies where it is used.
  Save the changes.
  
  
  
  Delete or Modify the Task List:
  
  After removing the task list from all hierarchies, you can proceed to delete or modify the task list as needed.
  
  
  
  Check Authorizations:
  
  Ensure you have the necessary authorizations to change or delete task lists and hierarchies.
  
  
  
  
  Additional Information:
  
  Task list hierarchies are used to structure complex maintenance or production processes by linking multiple task lists.
  Deleting a task list without removing it from hierarchies can cause inconsistencies in maintenance plans or production orders.
  Always verify dependencies before deleting or modifying task lists.
  If you are unsure about the impact, consult with your SAP PM or PP functional consultant.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  WPS01052 Task list &2 &3 (type &1) is still used in hierarchies
  
  
  Cause
  Task list is still assigned in one or more task list hierarchies
  
  
  Solution
  Remove the task list from all hierarchies (using IA06), then delete or modify
  
  
  Transactions
  IA05 (Display Hierarchy), IA06 (Change Hierarchy)
  
  
  
  
  If you need further assistance or a step-by-step guide on using IA06, feel free to ask!