How To Fix CMMD028 - Article & is already assigned to hierarchy node &

SAP Error Message - Details

• Message type: E = Error

• Message class: CMMD -

• Message number: 028

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

What causes this issue?

The article is already assigned to a hierarchy node. An article can be
assigned to a hierarchy only once.

System Response

The article is not assigned.

How to fix this error?

You can reassign the article 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CMMD028 - Article & is already assigned to hierarchy node & ?

  The SAP error message CMMD028 indicates that an article (material) is already assigned to a specific hierarchy node in the classification system. This typically occurs when you attempt to assign the same article to a hierarchy node that it is already associated with, which is not allowed in SAP.
  Cause:
  
  Duplicate Assignment: The article you are trying to assign is already linked to the specified hierarchy node.
  Incorrect Hierarchy Structure: The hierarchy structure may not be set up correctly, leading to confusion about the assignment.
  User Error: The user may not be aware that the article is already assigned to the node.
  
  Solution:
  
  
  Check Existing Assignments:
  
  Navigate to the classification view of the article in question and check its current assignments to see if it is already linked to the hierarchy node.
  
  
  
  Remove Existing Assignment:
  
  If you need to assign the article to a different node, first remove it from the current node before making the new assignment.
  
  
  
  Use Transaction Codes:
  
  Use transaction codes like CL02 (Change Class) or CL03 (Display Class) to view and manage the classifications and assignments of the article.
  
  
  
  Review Hierarchy Structure:
  
  Ensure that the hierarchy structure is correctly defined and that there are no conflicts in the assignments.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for more detailed instructions on managing classifications and hierarchy nodes.
  
  
  
  Related Information:
  
  SAP Classification System: Understand how the classification system works in SAP, including how articles are categorized and assigned to hierarchy nodes.
  Transaction Codes: Familiarize yourself with relevant transaction codes for managing classifications, such as CL01 (Create Class), CL02, and CL03.
  User Roles and Permissions: Ensure that you have the necessary permissions to make changes to classifications and hierarchy nodes.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP Notes for any known issues related to this error message.