How To Fix WPS01009 - Hierarchical task lists are ignored for equipment &1

WPS01009 - Overview

• Message type: E = Error

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

• Message number: 009

• Message text: Hierarchical task lists are ignored for equipment &1

Self-Explanatory Message

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WPS01009 - Details

• Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WPS01009 - Hierarchical task lists are ignored for equipment &1
  
  
  Cause:
  This warning message occurs when you try to assign or use a hierarchical task list for an equipment in a maintenance order or maintenance plan, but SAP does not support hierarchical task lists for equipment objects.
  
  Hierarchical task lists are typically used for functional locations, not for equipment.
  Equipment can only have single-level task lists assigned.
  When a hierarchical task list is assigned or referenced for equipment, SAP ignores the hierarchy and only processes the single-level task list.
  
  
  Explanation:
  
  Task lists in SAP Plant Maintenance (PM) can be either:
  Single-level task lists (simple list of operations)
  Hierarchical task lists (task lists with sub-assemblies or nested operations)
  
  
  Hierarchical task lists are designed to represent complex structures, which align better with functional locations (which represent physical or logical locations in a plant).
  Equipment, being a specific physical object, does not support