How To Fix KU326 - Hierarchy code must start with the CO area

KU326 - Overview

• Message type: E = Error

• Message class: KU - Costing: Rollup

• Message number: 326

• Message text: Hierarchy code must start with the CO area

What causes this issue?

A system error occurred.

How to fix this error?

Please inform your system administrator or contact the SAP hotline with
details of the message.

Error message extract from SAP system. Copyright SAP SE.

KU326 - Details

• The SAP error message KU326, which states "Hierarchy code must start with the CO area," typically occurs in the context of controlling (CO) module activities, particularly when dealing with cost center hierarchies or other hierarchical structures in SAP.
  
  Cause:
  This error arises when you are trying to create or modify a hierarchy code that does not start with the correct controlling area (CO area) identifier. In SAP, hierarchy codes are often structured to include the controlling area as a prefix to ensure that they are unique and correctly associated with the relevant organizational unit.
  
  Solution:
  To resolve this error, you should ensure that the hierarchy code you are trying to use starts with the appropriate controlling area code. Here are the steps you can take:
  
  
  Check the Controlling Area: Verify the controlling area you are working with. You can do this by navigating to the controlling area settings in SAP.
  
  
  Modify the Hierarchy Code: When creating