How To Fix RH176 - The subtree contains multiple root nodes

RH176 - Overview

• Message type: E = Error

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

• Message number: 176

• Message text: The subtree contains multiple root nodes

What causes this issue?

The hierarchy to be created as a subtree contains several root nodes
(the nodes with IDs &V1& and &V2&). A hierarchy that is to be created
as a subtree may only contain one root node.

System Response

The hierarchy was not created as a subtree.

How to fix this error?

Correct the hierarchy and reload it.

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.

RH176 - Details

• The SAP error message RH176, which states "The subtree contains multiple root nodes," typically occurs in the context of organizational management (OM) or personnel administration when there is an issue with the hierarchical structure of the organizational units or positions in the system.
  
  Cause:
  This error usually arises when there is an inconsistency in the organizational structure, specifically when the system detects that there are multiple root nodes in a hierarchy where only one is expected. This can happen due to:
  
  Incorrect Data Entry: Multiple organizational units or positions may have been incorrectly defined as root nodes.
  Data Migration Issues: If data has been migrated from another system, it may not have been structured correctly, leading to multiple root nodes.
  Manual Changes: Manual changes to the organizational structure that do not adhere to the hierarchical rules can also lead to this error.
  Inconsistent Relationships: Relationships between nodes (e.g., reporting lines) may not be properly defined, causing