How To Fix UGMD305 - Hierarchy &1 has more than one root node

SAP Error Message - Details

• Message type: E = Error

• Message class: UGMD - FIN Master Data: Messages

• Message number: 305

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

What causes this issue?

You defined hierarchy &V1& with multiple root nodes. However, this
hierarchy only allows one root node per hierarchy.

System Response

Action 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 UGMD305 - Hierarchy &1 has more than one root node ?

  The SAP error message UGMD305 indicates that a hierarchy has been defined with more than one root node, which is not allowed in hierarchical structures. This error typically occurs in the context of SAP applications that utilize hierarchical data structures, such as SAP Business Warehouse (BW) or SAP Master Data Governance (MDG).
  Cause:
  The error arises when the hierarchy you are trying to create or modify has multiple nodes that do not have a single parent node. In a valid hierarchy, there should be one root node (the topmost node) from which all other nodes branch out. If there are multiple nodes at the top level, the system cannot determine a single starting point for the hierarchy.
  Solution:
  To resolve the UGMD305 error, you can follow these steps:
  
  
  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 this by examining the nodes and their relationships.
  
  
  Identify and Remove Extra Root Nodes: If you find multiple root nodes, decide which one should be the actual root. You may need to restructure the hierarchy by assigning the other nodes as children of the chosen root node.
  
  
  Use Hierarchy Maintenance Tools: If you are using a specific SAP transaction or tool to manage hierarchies (like transaction code RSH1 for InfoObjects in BW), use the hierarchy maintenance features to adjust the structure accordingly.
  
  
  Validate the Hierarchy: After making changes, validate the hierarchy to ensure that it meets the requirements of having a single root node. This may involve using specific validation tools or functions within the SAP system.
  
  
  Test the Changes: Once you have made the necessary adjustments, test the hierarchy to ensure that it functions correctly without generating the UGMD305 error.
  
  
  Related Information:
  
  Documentation: Refer to SAP documentation related to hierarchical data structures for specific guidelines on creating and managing hierarchies.
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions related to this error.
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered and resolved similar issues.
  
  By following these steps, you should be able to resolve the UGMD305 error and successfully manage your hierarchy in SAP.