How To Fix MDG_MDF304 - Hierarchy &1 has more than one root node

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_MDF - Master Data: Messages

• Message number: 304

• Message text: Hierarchy &1 has more than one root node

What causes this issue?

You defined hierarchy &V1& with multiple root nodes. However, the
hierarchy-defining characteristic only allows one root node per
hierarchy.

System Response

Processing terminated

How to fix this error?

Correct the hierarchy definition.

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 MDG_MDF304 - Hierarchy &1 has more than one root node ?

  The SAP error message MDG_MDF304 indicates that there is an issue with the hierarchy structure in your Master Data Governance (MDG) system. Specifically, it means that the hierarchy you are trying to create or modify has more than one root node, which is not allowed in a proper hierarchical structure.
  
  Cause:
  
  Multiple Root Nodes: The hierarchy you are trying to create has multiple entries that are considered root nodes. In a valid hierarchy, there should only be one root node from which all other nodes branch out.
  Incorrect Data Entry: There may be incorrect or duplicate entries in the data that lead to multiple nodes being treated as root nodes.
  Data Model Issues: The underlying data model may not be correctly defined, leading to inconsistencies in how nodes are recognized.
  
  
  Solution:
  
  Review the Hierarchy Structure: Check the hierarchy you are trying to create or modify. Ensure that there is only one root node. You can do