How To Fix WPS01112 - Unidentifiable leaf task list in hierarchy table

WPS01112 - Overview

• Message type: E = Error

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

• Message number: 112

• Message text: Unidentifiable leaf task list in hierarchy table

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 WPS01112 - Unidentifiable leaf task list in hierarchy table ?

  Certainly! Here's a detailed explanation regarding the SAP error message:
  
  SAP Error Message:
  WPS01112 - Unidentifiable leaf task list in hierarchy table
  
  
  Cause:
  This error occurs when the system cannot find or identify a leaf task list in the task list hierarchy table during processing. In SAP Plant Maintenance (PM) or Production Planning (PP), task lists can be structured hierarchically, where a leaf task list is the lowest-level task list without any further sub-tasks.
  The error typically arises due to one or more of the following reasons:
  
  Missing or inconsistent entries in the task list hierarchy table (e.g., table PLIH or PLAS).
  The task list referenced as a leaf node does not exist or has been deleted.
  Data inconsistencies caused by incomplete or incorrect maintenance of task list hierarchies.
  Transport or system copy issues where task list hierarchy data was not properly migrated.
  Custom developments or user exits that manipulate task list data incorrectly.
  
  
  
  Solution:
  To resolve the error, follow these steps:
  
  
  Check