How To Fix KK402 - Item category & not allowed

KK402 - Overview

• Message type: E = Error

• Message class: KK -

• Message number: 402

• Message text: Item category & not allowed

What causes this issue?

You entered an item category which is not valid for the current costing
variant.
Example:
You cannot use the item category for an internal activity in the
detailed planning of a primary cost element.

System Response

You cannot edit this item.

How to fix this error?

Enter an item category which is valid for the current costing variant.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KK402 - Item category & not allowed ?

  The SAP error message KK402 ("Item category & not allowed") typically occurs in the context of controlling (CO) when you are trying to post a transaction that involves an item category that is not permitted for the operation you are attempting to perform. This error is often encountered in various scenarios, such as when dealing with internal orders, cost centers, or other controlling-related transactions.
  
  Cause:
  
  Incorrect Item Category: The item category you are trying to use is not configured for the specific transaction or operation you are performing.
  
  Configuration Issues: The item category may not be allowed in the configuration settings of the controlling module.
  Transaction Type Restrictions: Certain item categories may be restricted based on the type of transaction you are executing (e.g., certain types of orders or cost allocations).
  Master Data Issues: The master data associated with the item category may not be set up correctly, leading to this error.
  
  
  Solution:
  
  
  Check Item Category Configuration:
  
  Go