How To Fix RTCMMD074 - Hierarchy is active - you can only assign materials to end nodes

SAP Error Message - Details

• Message type: E = Error

• Message class: RTCMMD - Article Hierarchy

• Message number: 074

• Message text: Hierarchy is active - you can only assign materials to end nodes

What causes this issue?

You tried to assign materials to a node other than an end node in an
active material hierarchy. This is not allowed.

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?

Assign the materials to an end node.

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 RTCMMD074 - Hierarchy is active - you can only assign materials to end nodes ?

  The SAP error message RTCMMD074 indicates that you are trying to assign materials to a node in a hierarchy that is currently active, but the system only allows assignments to end nodes (leaf nodes) in that hierarchy. This is a common issue when working with material master data and product hierarchies in SAP.
  Cause:
  
  Active Hierarchy: The hierarchy you are trying to assign materials to is active, meaning it is currently in use and cannot be modified at non-leaf nodes.
  Node Type: You are attempting to assign materials to a node that is not an end node. In a hierarchy, only the final nodes (leaf nodes) can have materials assigned to them.
  
  Solution:
  
  Identify the Node: Check the hierarchy structure to identify whether the node you are trying to assign materials to is an end node or not.
  Assign to End Nodes: If you need to assign materials, ensure that you are doing so at the end nodes of the hierarchy. You may need to navigate down the hierarchy to find the appropriate end node.
  Modify Hierarchy: If you need to assign materials to a non-end node, consider modifying the hierarchy structure. This may involve:
  
  Deactivating the hierarchy temporarily (if possible).
  Making the necessary changes to the hierarchy.
  Reactivating the hierarchy after the changes.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific instructions on managing hierarchies and material assignments.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like MM01 (Create Material), MM02 (Change Material), or MM03 (Display Material) to manage materials.
  Hierarchy Management: Use transaction codes like CT04 (Maintain Characteristic) or CT05 (Maintain Class) to manage characteristics and classes associated with materials.
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message, as there may be known issues or enhancements that could affect your situation.
  
  If the problem persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.