Message type: E = Error
Message class:  FMHIE - Budget Hierarchies 
Message number: 436
Message text: Hierarchy ID &1 used for budget structure. Deletion not possible
Budget addresses or posting addresses that use constant budget address
elements of the <DS:DE.FMHIE_HIE_ID>hierarchy ID</> &V1& have been
defined in the budget structure.
The multi-level nodes or constant budget address elements of hierarchy
ID &V1& may not be deleted.
Remove all budget addresses or posting addresses that use the constant
budget address elements of hierarchy ID &V1& from the budget structure.
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.
The SAP error message FMHIE436 indicates that a specific Hierarchy ID is being used in a budget structure, and therefore, it cannot be deleted. This error typically arises when you attempt to delete a hierarchy that is still in use, which is a safeguard to prevent data integrity issues.
Cause: Hierarchy in Use: The Hierarchy ID you are trying to delete is currently assigned to a budget structure or is being referenced in other configurations. Dependencies: There may be dependencies on this hierarchy in various financial documents, reports, or other structures within the SAP system. Active Assignments: The hierarchy might be actively assigned to budget versions, planning layouts, or other financial planning tools.
Solution: Check Assignments: Before attempting to delete the hierarchy, check where it is being used. You can do this by: Navigating to the relevant transaction codes (like FMH1, FMH2, or FMH3) to view the hierarchy assignments. Using transaction SE11 to check the database tables for
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FMHIE435 Multi-level node becomes leaf node when its subordinate nodes are deleted
What causes this issue?  The multi-level node &V3&&V4& (hierarchical part, with node identifier &V2&) becomes a new leaf node ...
FMHIE434 Deletion not possible for multi-level node
What causes this issue?  The multi-level node &V3&&V4& (hierarchical part, with node identifier &V2&) is not defined as leaf n...
FMHIE437 Multi-level node used for budget structure. Deletion not possible
What causes this issue?  Budget addresses or posting addresses that use the multi-level node &V3& &V4& (hierarchical part, with node i...
FMHIE438 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&. Possib...
Click on this link to search all SAP messages.