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

SAP Error Message - Details

• 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?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

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 that the item you are trying to classify is allowed under the selected parent node. You may need to navigate to the lowest level of the hierarchy where the item can be classified.
  Use the Correct Node: If the item is not allowed under the current parent node, try to classify it under a different node that is appropriate for that item.
  Review Classification Settings: Check the configuration settings in the classification system to ensure that the hierarchy is set up correctly and that there are no restrictions preventing the classification of the item.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on the classification system and how to properly structure your items within the hierarchy.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CL02 (Change Class) or CL03 (Display Class) to view and modify classification data.
  SAP Notes: Check SAP Notes for any known issues or updates related to classification errors.
  User Authorization: Ensure that you have the necessary authorizations to make changes to the classification data.
  Training and Support: If you are unsure about the classification hierarchy or how to resolve the issue, consider reaching out to your SAP support team or attending training sessions on SAP classification.
  
  By following these steps, you should be able to resolve the IDCN420 error and successfully classify your item in the SAP system.