How To Fix UCD0020 - Entry &1 occurs several times beneath top node &2 of hierarchy &3

SAP Error Message - Details

• Message type: E = Error

• Message class: UCD0 - General Messages for Data Dispatcher, SAP Consolidation

• Message number: 020

• Message text: Entry &1 occurs several times beneath top node &2 of hierarchy &3

What causes this issue?

You can assign a node to a text node several times, but only once to a
totals node.
However, to do this, there can only be text nodes between the top node
of the hierarchy and the text node in question; or the text node must be
assigned directly below the top node of the hierarchy.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UCD0020 - Entry &1 occurs several times beneath top node &2 of hierarchy &3 ?

  The SAP error message UCD0020 indicates that there is a problem with the hierarchy structure in your SAP system. Specifically, it means that the entry (or node) specified by &1 occurs multiple times under the top node &2 of the hierarchy &3. This can lead to inconsistencies in the hierarchy and can affect reporting and data integrity.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that there are duplicate entries in the hierarchy. This can happen if the data was imported incorrectly or if there were manual errors during data entry.
  Incorrect Hierarchy Configuration: The hierarchy may not be configured correctly, leading to multiple instances of the same node being placed under a single parent node.
  Data Migration Issues: If data was migrated from another system, it’s possible that duplicates were introduced during the migration process.
  
  Solution:
  
  Identify Duplicates: Use transaction codes like SE16 or SE11 to check the relevant tables for duplicates. You can query the hierarchy table to find where the duplicate entries exist.
  Remove Duplicates: Once identified, you can either delete the duplicate entries or adjust the hierarchy structure to ensure that each node is unique under its parent.
  Check Hierarchy Configuration: Review the configuration of the hierarchy to ensure that it is set up correctly. This may involve checking the settings in the relevant customizing transactions.
  Data Validation: Implement data validation checks to prevent duplicates from being created in the future. This can include setting up constraints or validation rules in the data entry process.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on managing hierarchies in your version of SAP.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE16 (Data Browser), SE11 (Data Dictionary), and any specific transaction codes related to the hierarchy you are working with.
  SAP Notes: Check SAP Notes for any known issues or patches related to hierarchy management that may address this error.
  Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  By following these steps, you should be able to resolve the UCD0020 error and ensure the integrity of your hierarchy data in SAP.