How To Fix WPS01055 - Hierarchy &1 &2 &3 has subordinate task lists; archive not possible

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 055

• Message text: Hierarchy &1 &2 &3 has subordinate task lists; archive not possible

Self-Explanatory Message

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• What is the cause and solution for SAP error message WPS01055 - Hierarchy &1 &2 &3 has subordinate task lists; archive not possible ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WPS01055 Hierarchy &1 &2 &3 has subordinate task lists; archive not possible
  
  Meaning / Cause:
  This error occurs during the archiving process of a task list hierarchy in SAP Plant Maintenance (PM) or Production Planning (PP). The system is trying to archive a task list hierarchy (a parent task list), but it detects that there are subordinate (child) task lists still existing under this hierarchy.
  
  Hierarchy &1: The task list group or hierarchy identifier.
  &2: The task list group counter or usage.
  &3: The task list group status or other relevant identifier.
  
  The presence of subordinate task lists means the parent task list cannot be archived independently because the child task lists are still active or not archived.
  
  Cause:
  
  The task list hierarchy you want to archive contains subordinate task lists that have not been archived yet.
  SAP requires that subordinate task lists be archived first before the parent hierarchy can be archived.
  This is to maintain data consistency and integrity in the system.
  
  
  Solution:
  
  
  Check for subordinate task lists:
  
  Use transaction IA05 (Archive Task Lists) or IA06 (Display Task Lists) to identify subordinate task lists under the hierarchy.
  Alternatively, use reports or queries to list all task lists belonging to the hierarchy.
  
  
  
  Archive subordinate task lists first:
  
  Archive all subordinate (child) task lists before attempting to archive the parent task list hierarchy.
  Use the appropriate archiving object (e.g., PM_TASKLIST or PP_TASKLIST) and ensure subordinate task lists are included.
  
  
  
  Verify no active subordinate task lists remain:
  
  Confirm that all subordinate task lists are either archived or deleted if no longer needed.
  Check for any task lists that might be locked or in use.
  
  
  
  Retry archiving the parent hierarchy:
  
  Once all subordinate task lists are archived, retry the archiving process for the parent task list hierarchy.
  
  
  
  
  Additional Information:
  
  Archiving Object: Usually related to PM_TASKLIST or PP_TASKLIST depending on the module.
  Transaction Codes:  
  
  IA05 - Archive Task Lists  
  IA06 - Display Task Lists  
  SARA - General archiving transaction to manage archiving objects and sessions.
  
  
  Hierarchy Structure: Task lists in SAP can be structured hierarchically, where a parent task list references subordinate task lists.
  Data Consistency: SAP enforces archiving order to prevent orphaned records and maintain referential integrity.
  
  
  Summary:
  The error WPS01055 indicates that you cannot archive a task list hierarchy because subordinate task lists still exist. To resolve this, archive all subordinate task lists first, then archive the parent hierarchy.
  
  If you need help with specific steps or transactions, feel free to ask!