How To Fix FMHIE430 - Inconsistent hierarchy data: invalid next sibling definition for ID &1

FMHIE430 - Overview

• Message type: E = Error

• Message class: FMHIE - Budget Hierarchies

• Message number: 430

• Message text: Inconsistent hierarchy data: invalid next sibling definition for ID &1

What causes this issue?

The 'next sibling' definition for at least one child node of the budget
address &V2&&V3& (hierarchical part, with node identifier &V4&) is
inconsistent.
Possible reasons for this inconsistency are as follows:
At least two child nodes have no next sibling (there must be exactly one
child node without next sibling)
One child node has as next sibling a multi-level node, which is not a
child node of the multi-level node &V4&
One child node has itself as next sibling
Two or more child nodes reference each other as next sibling

System Response

The multi-level budget structure cannot be processed for hierarchy ID
&V1&.

How to fix this error?

Check the definition of the 'next sibling' for all child nodes of the
budget address &V2&&V3& (hierarchical part) in hierarchy ID &V1&.

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.

FMHIE430 - Details

• The SAP error message FMHIE430 indicates that there is an inconsistency in the hierarchy data, specifically related to the definition of a "next sibling" in a hierarchy structure. This error typically arises in the context of hierarchical data structures used in SAP, such as those found in Financial Management (FM) or other modules that utilize hierarchical data.
  
  Cause:
  The error message FMHIE430 is triggered when the system detects that the definition of a "next sibling" for a particular hierarchy node (identified by ID &1) is invalid. This can occur due to several reasons, including:
  
  Corrupted Hierarchy Data: The hierarchy data may have been corrupted due to improper updates, deletions, or modifications.
  Incorrect Configuration: There may be an issue with the configuration of the hierarchy, such as incorrect parent-child relationships.
  Data Migration Issues: If data was migrated from another system or from a previous version of SAP, inconsistencies may have been introduced.
  Manual Errors: Manual changes to