How To Fix AA161 - Depreciation at main number level should not be changed (Check entry)

SAP Error Message - Details

• Message type: E = Error

• Message class: AA - Messages for Asset Accounting

• Message number: 161

• Message text: Depreciation at main number level should not be changed (Check entry)

What causes this issue?

You are changing the control indicator so that depreciation will be
calculated at main asset number level.

System Response

At the moment the function 'Dep. at MainAssrNo. is not active.
You can make this change. However, it will effect all the assets you
create in the future in this asset class.
Assets already defined will not be effected. If you want them to be,
you must perform a mass change for all the assets.
Instead of changing the control to calculating depreciation at main
asset number, you should consider creating a new asset class.

How to fix this error?

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AA161 - Depreciation at main number level should not be changed (Check entry) ?

  The SAP error message AA161 ("Depreciation at main number level should not be changed (Check entry)") typically occurs in the Asset Accounting (FI-AA) module when there is an attempt to change the depreciation settings or values at the main asset level, which is not allowed in certain scenarios. This error is often related to the configuration of asset classes, the status of the asset, or the specific transaction being performed.
  Cause:
  
  Incorrect Transaction Type: The transaction you are trying to execute may not allow changes to the main asset's depreciation settings.
  Asset Status: The asset may be in a status that does not permit changes (e.g., it may be fully depreciated or retired).
  Configuration Issues: The asset class configuration may restrict changes to depreciation settings at the main number level.
  Posting Period: The posting period may be closed, preventing changes to the asset's depreciation.
  
  Solution:
  
  Check Asset Status: Ensure that the asset is not in a status that prevents changes. If necessary, change the status to allow modifications.
  Review Transaction Type: Verify that you are using the correct transaction type for the changes you want to make. If you need to change depreciation, ensure you are using the appropriate transaction (e.g., AS02 for changing asset master data).
  Configuration Review: Check the configuration of the asset class in transaction OAOA. Ensure that the settings allow for changes to depreciation at the main number level.
  Posting Period: Ensure that the posting period is open. If it is closed, you may need to open it or wait until the next period.
  Consult Documentation: Review SAP documentation or consult with your SAP support team for specific guidelines related to your organization's configuration.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as AS01 (Create Asset), AS02 (Change Asset), and AS03 (Display Asset).
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  User Authorizations: Ensure that you have the necessary authorizations to make changes to asset master data.
  Testing in Development: If possible, test the changes in a development or sandbox environment before applying them in production.
  
  If the issue persists after following these steps, it may be beneficial to engage with your SAP support team or consult the SAP community for further assistance.