How To Fix AC479 - A real depreciation area is not allowed to become a derived area

AC479 - Overview

• Message type: E = Error

• Message class: AC - Error messages from Asset Customizing

• Message number: 479

• Message text: A real depreciation area is not allowed to become a derived area

What causes this issue?

You want to change a real depreciation area into a derived depreciation
area. This change is not possible for technical reasons (due to the
consistency of the control tables).

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?

Correct your entry.
If it is absolutely necessary to change this depreciation area, follow
these two steps:
Delete the depreciation area.
Create the depreciation area again by making a copy of an appropriate
depreciation area.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AC479 - A real depreciation area is not allowed to become a derived area ?

  The SAP error message AC479, which states "A real depreciation area is not allowed to become a derived area," typically occurs in the context of asset accounting when there is an attempt to configure a real depreciation area as a derived area. In SAP, depreciation areas are used to manage different types of asset valuations, such as book depreciation, tax depreciation, and so on. 
  
  Cause:
  
  Configuration Issue: The error arises when the system is configured to treat a real depreciation area as a derived area. Real depreciation areas are used for actual financial reporting, while derived areas are typically used for reporting purposes and are calculated based on the values from real areas.
  Incorrect Settings: The settings in the asset accounting configuration may have been incorrectly defined, leading to this conflict.
  
  
  Solution:
  To resolve this error, you need to check and adjust the configuration settings in the Asset Accounting module:
  
  
  Access Configuration:
  
  Go to the SAP