How To Fix RH021 - The root node & of the subtree is not in the hierarchy

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 021

• Message text: The root node & of the subtree is not in the hierarchy

What causes this issue?

The hierarchy was loaded as a subtree. Root node &V1& of the subtree
does not exist in the target hierarchy. Since the root node of the
subtree is used as an interface between the subtree and the target
hierarchy, the node must exist in the target hierarchy or the target
hierarchy may not exist.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

In the first case, all the nodes that hang under the root of the
subtree are inserted under the corresponding node in the target
hierarchy. In the second case, the subtree is created as a new
hierarchy.

System Response

The hierarchy is not updated.

How to fix this error?

The subtree or target hierarchy must be modified so that the root node
of the subtree is contained in the target hierarchy.

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 RH021 - The root node & of the subtree is not in the hierarchy ?

  The SAP error message RH021, which states "The root node & of the subtree is not in the hierarchy," typically occurs in the context of organizational management or when dealing with hierarchical structures in SAP, such as in the Human Resources (HR) module. This error indicates that the system is unable to find the specified root node in the defined hierarchy, which can lead to issues when trying to perform operations that require a valid hierarchy structure.
  Causes:
  
  Incorrect Node Specification: The root node specified in the operation may not exist in the hierarchy.
  Hierarchy Changes: The hierarchy may have been modified, and the specified node has been removed or is no longer valid.
  Data Inconsistencies: There may be inconsistencies in the data, such as missing entries or incorrect relationships between nodes.
  Authorization Issues: The user may not have the necessary authorizations to view or manipulate the specified node in the hierarchy.
  
  Solutions:
  
  Verify Node Existence: Check if the root node specified in the error message exists in the hierarchy. You can do this by navigating to the relevant organizational structure in SAP.
  Check Hierarchy Structure: Review the hierarchy structure to ensure that it is correctly defined and that all nodes are properly linked.
  Recreate or Adjust the Hierarchy: If the hierarchy has been changed, you may need to recreate or adjust it to include the necessary nodes.
  Data Consistency Check: Run consistency checks on the organizational data to identify and correct any inconsistencies.
  Authorization Check: Ensure that the user has the necessary authorizations to access and manipulate the hierarchy. This may involve checking user roles and permissions.
  Consult Documentation: Refer to SAP documentation or support notes related to organizational management for additional guidance on resolving hierarchy-related issues.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like OOCU (for organizational units) or PPOME (for displaying and maintaining the organizational structure) to investigate the hierarchy.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Support: If the issue persists, consider reaching out to SAP support for further assistance, providing them with details of the error and the context in which it occurs.
  
  By following these steps, you should be able to identify the cause of the RH021 error and implement a solution to resolve it.