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

RH021 - Overview

• 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.

RH021 - Details

• 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  Hierarchy Changes: The hierarchy may have been modified, and the specified node has been removed or is no longer valid.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