How To Fix WPS01005 - Maintenance strategy &1 differs from strategy &2 of subordinate task list

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 005

• Message text: Maintenance strategy &1 differs from strategy &2 of subordinate task list

Self-Explanatory Message

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• What is the cause and solution for SAP error message WPS01005 - Maintenance strategy &1 differs from strategy &2 of subordinate task list ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WPS01005 Maintenance strategy &1 differs from strategy &2 of subordinate task list
  
  Cause:
  This error occurs when you try to assign or use a maintenance strategy in a task list, but the subordinate task list(s) linked to it have a different maintenance strategy assigned. In SAP Plant Maintenance (PM), the maintenance strategy defines the overall approach or plan for maintenance activities, and consistency is required between the main task list and its subordinate task lists.
  
  Main task list has maintenance strategy &1.
  Subordinate task list has maintenance strategy &2.
  Since these two strategies differ, SAP throws this error to prevent inconsistent maintenance planning.
  
  
  Explanation:
  
  A maintenance strategy is used to group and schedule maintenance tasks.
  When a task list has subordinate task lists (e.g., for complex equipment or assemblies), all these task lists must share the same maintenance strategy to ensure coherent scheduling and execution.
  Different strategies could lead to conflicting scheduling rules or maintenance plans.
  
  
  Solution:
  
  Check the maintenance strategies assigned to the main and subordinate task lists.
  
  Use transaction IA05 (Display Task List) or IA06 (Change Task List) to view the maintenance strategy.
  
  
  Align the maintenance strategies:
  
  Change the maintenance strategy of the subordinate task list(s) to match the main task list.
  Or, if appropriate, change the main task list’s strategy to match the subordinate task list(s).
  
  
  Save the changes and try the operation again.
  
  
  How to Change Maintenance Strategy in Task List:
  
  Go to transaction IA06 (Change Task List).
  Enter the task list group, group counter, and plant.
  Navigate to the header data.
  Change the Maintenance Strategy field to the desired strategy.
  Save the task list.
  
  
  Additional Information:
  
  Maintenance strategies are defined in transaction IP41 (Create Maintenance Strategy).
  Consistent maintenance strategies ensure proper scheduling in Maintenance Plans.
  If you have multiple subordinate task lists, ensure all have the same strategy as the main task list.
  This error is common when copying or creating task lists from different sources without aligning strategies.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  WPS01005 Maintenance strategy &1 differs from strategy &2 of subordinate task list
  
  
  Cause
  Main and subordinate task lists have different maintenance strategies
  
  
  Solution
  Align maintenance strategies between main and subordinate task lists
  
  
  Transactions
  IA05 (Display Task List), IA06 (Change Task List), IP41 (Create Maintenance Strategy)
  
  
  
  
  If you need further assistance or specific steps for your SAP version, feel free to ask!