How To Fix RTCMMD028 - Article & is already assigned to hierarchy node &

RTCMMD028 - Overview

• Message type: E = Error

• Message class: RTCMMD - Article Hierarchy

• Message number: 028

• Message text: Article & is already assigned to hierarchy node &

What causes this issue?

The material is already assigned to a hierarchy node. Each material can
only be assigned once within a hierarchy.

System Response

The material is not copied.

How to fix this error?

You can reassign the material from its original node to the new node.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

RTCMMD028 - Details

• The SAP error message RTCMMD028 indicates that an article (material) is already assigned to a specific hierarchy node in the system. This typically occurs in the context of SAP's Master Data Management (MDM) or when dealing with product hierarchies in SAP Retail or SAP S/4HANA.
  
  Cause:
  The error arises when you attempt to assign an article to a hierarchy node that it is already associated with. This can happen due to:
  
  Duplicate assignment attempts.
  Incorrect data entry or processing logic in the system.
  A misunderstanding of the hierarchy structure and the relationships between articles and nodes.
  
  
  Solution:
  To resolve the RTCMMD028 error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Use transaction codes like MM03 (Display Material) or MM02 (Change Material) to check the current assignments of the article in question.
  Navigate to the relevant hierarchy node to see if the article is already listed.
  
  
  
  Remove Duplicate Assignment:
  
  If the article is already assigned and you need to change its assignment,