Hi Ahmad Mahmud,
Of course. When you run this report the program consider the planned depreciation. And if you have changes in the depreciation parameters, the program does not considered these changes.
And for this, you've this difference and how to view in two dimensions.
Please, read more about it in the note below.
1743712 - Accumulated Depreciation Difference in Asset Balances Report and Transaction AW01N or AS93: indicator "Current book value"
JPA