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