How To Fix RTCMMD093 - A top node already exists

RTCMMD093 - Overview

• Message type: E = Error

• Message class: RTCMMD - Article Hierarchy

• Message number: 093

• Message text: A top node already exists

What causes this issue?

Each material hierarchy can only have one top node. The top node is the
root node of the material 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 RTCMMD093 - A top node already exists ?

  The SAP error message RTCMMD093 "A top node already exists" typically occurs in the context of SAP Master Data Management (MDM) or when working with hierarchical data structures, such as when trying to create or modify a hierarchy in a data model.
  
  Cause:
  This error indicates that you are attempting to create a new top node in a hierarchy where a top node already exists. In hierarchical data structures, a top node (or root node) is the highest level in the hierarchy, and there can only be one top node at any given time. If you try to create another top node without first removing or modifying the existing one, you will encounter this error.
  
  Solution:
  To resolve the RTCMMD093 error, you can follow these steps:
  
  
  Check Existing Hierarchy: Review the existing hierarchy to identify the current top node. You can do this by navigating to the relevant data model or hierarchy structure in SAP.
  
  
  Modify