How To Fix WPS01004 - Input of a subordinate task list is not allowed (-> F1)

WPS01004 - Overview

• Message type: E = Error

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

• Message number: 004

• Message text: Input of a subordinate task list is not allowed (-> F1)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WPS01004 - Input of a subordinate task list is not allowed (-> F1) ?

  Certainly! Here's a detailed explanation for the SAP error message WPS01004:
  
  SAP Error Message:
  WPS01004 - Input of a subordinate task list is not allowed (-> F1)
  
  
  Cause:
  This error occurs when you try to enter or assign a subordinate task list directly in a context where only a main (superordinate) task list is allowed. In SAP Plant Maintenance (PM) or Production Planning (PP), task lists can be structured hierarchically:
  
  Main (superordinate) task list: The primary task list that can have subordinate task lists assigned to it.
  Subordinate task list: A task list that is linked to a main task list and cannot be used independently in certain transactions.
  
  The system restricts the direct input or assignment of subordinate task lists in places where only main task lists are valid, to maintain the integrity of the task list hierarchy.
  
  When does this happen?
  
  When creating or changing maintenance plans, maintenance orders, or production orders.
  When assigning task lists in operations