How To Fix DIWP1237 - Task list &1 &2 &3 already exists in hierarchy.

DIWP1237 - Overview

• Message type: E = Error

• Message class: DIWP1 - Revision Planning

• Message number: 237

• Message text: Task list &1 &2 &3 already exists in hierarchy.

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 DIWP1237 - Task list &1 &2 &3 already exists in hierarchy. ?

  The SAP error message DIWP1237 indicates that a task list with the specified identifiers already exists in the hierarchy. This typically occurs when you are trying to create or insert a task list that has the same key as an existing one. Here’s a breakdown of the cause, potential solutions, and related information:
  
  Cause:
  
  Duplicate Entry: The most common cause is that you are attempting to create a task list that already exists in the system. This can happen if the task list was previously created but not properly deleted or if there was an attempt to create it again without checking for existing entries.
  Hierarchy Structure: The error may also arise from the hierarchical structure of task lists, where the same task list is being referenced or created under a parent that already contains it.
  
  
  Solution:
  
  
  Check Existing Task Lists: Before creating a new task list, check the existing task lists in the system