How To Fix KZ018 - You cannot assign to the higher-level cost object &

KZ018 - Overview

• Message type: E = Error

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

• Message number: 018

• Message text: You cannot assign to the higher-level cost object &

What causes this issue?

<DS:GLOS.cost_object_ID>Cost object ID</> &v1& cannot be entered as a
higher-level <DS:GLOS.cost_object_node>cost object node</> because:
Single objects have already been assigned to it
This assignment would create a loop in the hierarchy

System Response

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

How to fix this error?

You have the following options:
Enter a different cost object ID as a higher-level cost object node
Delete the assignment of the single object for &v1& in the maintenance
of the cost object master data

Error message extract from SAP system. Copyright SAP SE.

KZ018 - Details

• The SAP error message KZ018 ("You cannot assign to the higher-level cost object &") typically occurs in the context of cost accounting when there is an attempt to assign costs to a higher-level cost object (such as a cost center, internal order, or project) that is not allowed due to certain restrictions or configurations in the system.
  
  Cause:
  
  Hierarchy Restrictions: The higher-level cost object may have restrictions that prevent it from receiving assignments. This could be due to the configuration of the cost object hierarchy.
  Cost Object Status: The higher-level cost object may be in a status that does not allow for cost assignments (e.g., it may be closed or inactive).
  Incorrect Assignment: The assignment being made may not be valid for the type of cost object being used.
  Missing Authorizations: The user may not have the necessary authorizations to perform the assignment to the higher-level cost object.
  Cost Element Issues: The cost element being used