How To Fix KZ064 - Cost object & cannot be defined as top node of hierarchy

KZ064 - Overview

• Message type: E = Error

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

• Message number: 064

• Message text: Cost object & cannot be defined as top node of hierarchy

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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KZ064 - Details

• The SAP error message KZ064 ("Cost object & cannot be defined as top node of hierarchy") typically occurs in the context of controlling (CO) when you are trying to define a cost object (such as a cost center, internal order, or project) as the top node of a hierarchy, but the system does not allow it due to certain constraints or configurations.
  
  Cause:
  
  Incorrect Hierarchy Configuration: The cost object you are trying to set as the top node may not be configured correctly in the hierarchy. For example, it might not be a valid cost object type for the hierarchy you are working with.
  Existing Hierarchy Structure: There may already be an existing hierarchy structure that does not allow the specified cost object to be the top node.
  Master Data Issues: The cost object may not be fully defined or may have missing master data that prevents it from being recognized as a top