How To Fix KX230 - Only the root node may exist at the highest level.

SAP Error Message - Details

• Message type: E = Error

• Message class: KX - EC-EIS/EC-BP: Data basis, data collection

• Message number: 230

• Message text: Only the root node may exist at the highest 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 KX230 - Only the root node may exist at the highest level. ?

  The SAP error message KX230, which states "Only the root node may exist at the highest level," typically occurs in the context of SAP Controlling (CO) when dealing with the structure of cost centers, internal orders, or other hierarchical data structures. This error indicates that there is an issue with the hierarchy of nodes in a particular structure, where multiple nodes are incorrectly positioned at the highest level.
  Cause:
  
  Hierarchy Structure Issue: The error usually arises when there are multiple nodes (e.g., cost centers or internal orders) defined at the highest level of a hierarchy, which is not allowed. In a valid hierarchy, only one node can exist at the top level (the root node).
  Incorrect Configuration: This can happen due to incorrect configuration or data entry when setting up the hierarchy in the system.
  Data Migration Issues: If data has been migrated from another system or if there have been changes made to the hierarchy structure, it may lead to inconsistencies.
  
  Solution:
  
  Review the Hierarchy: Check the hierarchy structure in the relevant transaction (e.g., transaction code OKEB for cost centers). Ensure that only one root node exists at the highest level.
  Adjust Node Levels: If you find multiple nodes at the highest level, you will need to adjust their levels. Move the additional nodes to a lower level in the hierarchy.
  Use Transaction Codes: Use transaction codes like OKEB (for cost centers) or OKEE (for internal orders) to manage and adjust the hierarchy.
  Data Validation: If the issue arose from data migration, validate the data to ensure that it adheres to the hierarchy rules of SAP.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on setting up hierarchies correctly.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered and resolved similar issues.
  Training and Documentation: Consider reviewing training materials or documentation related to SAP Controlling and hierarchy management to better understand the structure and rules.
  
  By following these steps, you should be able to resolve the KX230 error and ensure that your hierarchy is correctly configured in SAP.