How To Fix IDCN420 - Item not allowed under parent node; enter node at lowest level

IDCN420 - Overview

• Message type: E = Error

• Message class: IDCN -

• Message number: 420

• Message text: Item not allowed under parent node; enter node at lowest level

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message IDCN420 - Item not allowed under parent node; enter node at lowest level ?

  The SAP error message IDCN420 ("Item not allowed under parent node; enter node at lowest level") typically occurs in the context of SAP's classification system, particularly when dealing with the creation or modification of classification data in the system. This error indicates that the item you are trying to classify is not allowed under the specified parent node in the classification hierarchy.
  
  Cause:
  
  Hierarchy Structure: The item you are trying to classify is being placed under a parent node that does not permit it. This could be due to the hierarchical structure defined in the classification system.
  Node Level: The item must be classified at the lowest level of the hierarchy, meaning it cannot be placed under a parent node that is not its direct ancestor.
  
  Configuration Issues: There may be configuration settings in the classification system that restrict certain items from being classified under specific nodes.
  
  
  Solution:
  
  Check Hierarchy: Review the classification hierarchy to ensure