How To Fix KZ021 - CO area & differs from that of higher-level cost object

KZ021 - Overview

• Message type: E = Error

• Message class: KZ - Cost Object Repetitive Mfg / Process Mfg

• Message number: 021

• Message text: CO area & differs from that of higher-level cost object

What causes this issue?

You entered a controlling area that does not match that of the
higher-level <DS:GLOS.cost_object_ID>cost object ID</>.

System Response

All <DS:GLOS.cost_object_node>cost object nodes</> in a
<DS:GLOS.cost_object_hierarchy>cost object hierarchy</> must belong to
the same controlling area.

How to fix this error?

Delete your entry. The system will then use the controlling area of the
higher-level cost object node.

Error message extract from SAP system. Copyright SAP SE.

KZ021 - Details

• The SAP error message KZ021 indicates that there is a discrepancy between the controlling area (CO area) of the cost object you are trying to process and that of a higher-level cost object. This typically occurs in the context of cost accounting when you are attempting to post costs or perform transactions that involve multiple cost objects, such as internal orders, cost centers, or projects.
  
  Cause:
  The error arises when:
  
  You are trying to assign a cost object (like an internal order or cost center) that belongs to a different controlling area than the higher-level cost object (like a project or another internal order).
  The system enforces that all cost objects within a hierarchy must belong to the same controlling area to maintain consistency in cost accounting.
  
  
  Solution:
  To resolve the KZ021 error, you can take the following steps:
  
  
  Check the Controlling Areas:
  
  Verify the controlling area of the cost object you are trying to post to and