How To Fix AC091 - Manual entries are not possible (area defined to adopt identical values)

SAP Error Message - Details

• Message type: E = Error

• Message class: AC - Error messages from Asset Customizing

• Message number: 091

• Message text: Manual entries are not possible (area defined to adopt identical values)

What causes this issue?

You specified a depreciation area in which the acquisition value is to
be reduced by investment support.
This depreciation area &V1& is defined so that it automatically adopts
values from area &V2&. You cannot, therefore, enter values manually in
this area.

System Response

The system deletes your entry.

How to fix this error?

If you enter area &V2&, the system automatically reduces the
acquisition values in this area and in area &V1&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AC091 - Manual entries are not possible (area defined to adopt identical values) ?

  The SAP error message AC091 ("Manual entries are not possible (area defined to adopt identical values)") typically occurs in the context of Asset Accounting (FI-AA) when you are trying to make manual entries in a specific area of asset accounting that has been configured to adopt identical values. This means that the system is set up to automatically take values from another area, and manual entries are not allowed in that area.
  Cause:
  
  Configuration Settings: The asset area in question is configured to adopt values from another area (e.g., acquisition values, depreciation values) and does not allow manual entries.
  Asset Class Settings: The asset class may have settings that restrict manual entries for certain fields.
  Transaction Type: The transaction type being used may not allow manual entries for the specified asset area.
  
  Solution:
  
  Check Configuration: Review the configuration settings for the asset area in transaction code OAOA (Define Asset Areas) or OAYZ (Define Asset Classes). Ensure that the area is set up correctly and that it is intended to allow manual entries if needed.
  Use Correct Transaction: If you need to enter values manually, ensure you are using the correct transaction that allows manual entries for the asset area in question.
  Adjust Asset Class Settings: If the asset class is restricting manual entries, you may need to adjust the settings in transaction code OAOA or OAYZ to allow manual entries for that specific asset class.
  Consult Documentation: Review SAP documentation or consult with your SAP administrator to understand the specific configuration and restrictions in place for the asset area you are working with.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OAOA (Define Asset Areas), OAYZ (Define Asset Classes), and OABW (Asset Transactions) to navigate the configuration settings.
  SAP Notes: Check for any SAP Notes related to this error message for additional guidance or updates that may address the issue.
  User Roles and Authorizations: Ensure that you have the necessary authorizations to make changes or entries in the asset accounting module.
  
  If the issue persists after checking the above points, it may be beneficial to consult with your SAP support team or a functional consultant specializing in Asset Accounting for further assistance.