How To Fix ER009 - Reference to a higher hierarchy level is not allowed

ER009 - Overview

• Message type: E = Error

• Message class: ER - IS-U regional structure

• Message number: 009

• Message text: Reference to a higher hierarchy level is not allowed

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

ER009 - Details

• The SAP error message ER009, which states "Reference to a higher hierarchy level is not allowed," typically occurs in the context of hierarchical data structures, such as when working with cost centers, profit centers, or other organizational units in SAP. This error indicates that there is an attempt to reference a higher-level node in a hierarchy, which is not permitted according to the system's rules.
  
  Cause:
  
  Hierarchy Structure Violation: The error usually arises when you try to assign a lower-level object (like a cost center or profit center) to a higher-level object in a way that violates the defined hierarchy.
  Incorrect Configuration: The configuration of the hierarchy may not allow certain types of references, leading to this error.
  Data Entry Error: There may be a mistake in the data entry where a user is trying to link or reference an object incorrectly.
  
  
  Solution:
  
  Check Hierarchy Levels: Review the hierarchy structure in the relevant module (e.g., controlling,