How To Fix FMHIE438 - Inconsistent hierarchy data: invalid next sibling definition for ID &1

FMHIE438 - Overview

• Message type: E = Error

• Message class: FMHIE - Budget Hierarchies

• Message number: 438

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

What causes this issue?

The 'next sibling' definition for at least one top-level node is
inconsistent for hierarchy ID &V1&.
Possible reasons for this inconsistency are as follows:
At least two top-level nodes have no next sibling (there must be exactly
one top-level node without next sibling)
One top-level node has as next sibling a multi-level node, which is not
a top-level node
One top-level node has itself as next sibling
Two or more top-level nodes reference each other as next sibling

System Response

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

How to fix this error?

Check the definition of the 'next sibling' for all top-level nodes of
the 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.

FMHIE438 - Details

• The SAP error message FMHIE438 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 SAP's Financial Management (FM) module, particularly when dealing with hierarchical data structures such as cost centers, internal orders, or other organizational units.
  
  Cause:
  The error message FMHIE438 is triggered when the system detects that the definition of a "next sibling" for a particular node in the hierarchy is invalid. This can occur due to several reasons, including:
  
  Corrupted Hierarchy Data: The hierarchy data may have been corrupted due to improper data entry, system errors, or inconsistencies during data migration.
  Incorrect Hierarchy Structure: The hierarchy may not be structured correctly, leading to invalid references between nodes.
  Changes in Hierarchy: Recent changes to the hierarchy (like adding or deleting nodes) may not have been properly reflected in the system, leading to