How To Fix RH012 - Node ID & is used more than once in the hierarchy

SAP Error Message - Details

• Message type: E = Error

• Message class: RH - BW: Hierarchies ( basic functions )

• Message number: 012

• Message text: Node ID & is used more than once in the hierarchy

What causes this issue?

The NodeID is the unique key for the internal structure of the
hierarchy and can therefore only be used once. NodeID &V1& exists more
than once.

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?

Check the hierarchy structure in the source system/file and remove all
duplicated NodeID's.

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 RH012 - Node ID & is used more than once in the hierarchy ?

  The SAP error message RH012, which states "Node ID & is used more than once in the hierarchy," typically occurs in the context of SAP HR (Human Resources) when dealing with organizational management (OM) structures. This error indicates that a specific node (which could represent an organizational unit, position, or job) is being referenced multiple times in the hierarchy, which is not allowed.
  Cause:
  
  Duplicate Node IDs: The most common cause of this error is that the same node ID has been assigned to more than one parent node in the organizational structure.
  Incorrect Data Entry: During the creation or modification of the organizational structure, a user may have inadvertently assigned the same node ID to different parts of the hierarchy.
  Data Migration Issues: If data has been migrated from another system or if there have been bulk uploads, it is possible that duplicate entries were created.
  
  Solution:
  
  Identify Duplicate Nodes: Use transaction codes like PPOME (for Organizational Management) to visualize the hierarchy and identify where the duplicate node IDs are being used.
  Correct the Hierarchy: Once the duplicates are identified, you will need to decide which instance of the node ID should remain and which should be removed or modified. This may involve:
  
  Deleting one of the duplicate nodes.
  Reassigning one of the nodes to a different parent node.
  
  
  Check Data Consistency: After making changes, ensure that the organizational structure is consistent and that there are no other duplicate entries.
  Test Changes: After corrections, test the organizational structure to ensure that the error no longer appears and that the hierarchy functions as expected.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as PPOME, PPOC, and PPOE for managing organizational structures.
  Documentation: Refer to SAP Help documentation for Organizational Management to understand the structure and rules governing node IDs.
  Data Validation: Implement data validation checks during data entry or migration processes to prevent future occurrences of this error.
  User Training: Ensure that users involved in maintaining the organizational structure are trained on best practices to avoid creating duplicate nodes.
  
  By following these steps, you should be able to resolve the RH012 error and maintain a clean and functional organizational hierarchy in your SAP system.