Fixed asset depreciation is calculated automatically during the Month-End Closing procedure based on the depreciation parameters specified for the asset, including (acquisition cost, useful life, depreciation method, etc.).
During the Month-End Closing procedure, the system automatically creates the Fixed Asset Depreciation document. If required, the user can manually adjust the depreciation amount in this document for a specific accounting period.
For more information about fixed asset depreciation, refer to the following guide The Fixed Asset Depreciation documents.
System Logic
When the depreciation amount is manually changed for a specific month:
Example
Initial data

Calculation in January
When the Month-End Closing procedure is performed, the system calculates depreciation automatically.

Calculation in February (after the manual adjustment)
In February, the user manually changes the depreciation amount in the Fixed Asset Depreciation document from the calculated amount of 1,666.67 AED to 2,000.00 AED. As a result, February depreciation is recorded as 2,000.00 AED instead of 1,666.67 AED.
The calculation is updated as follows:

Note. The edited document will not be automatically recalculated by the Month-End Closing procedure. If depreciation data changes after the document has been manually edited, you will need to update the document manually.
Calculation in March
In March, depreciation is calculated automatically during the Month-End Closing procedure.
The system creates the Fixed Asset Depreciation document based on the fixed asset's depreciation parameters. The monthly depreciation amount remains 1,666.67 AED, because the asset's depreciation settings (such as acquisition cost, useful life, and depreciation method) have not changed.
The calculation is updated as follows:

Conclusion
The manual depreciation adjustment applies only to the selected month.
The system does not recalculate future depreciation or compensate for the difference in the following months. Future depreciation continues to be calculated automatically during the Month-End Closing procedure based on the asset's depreciation settings and the updated accumulated depreciation and remaining book value.