Field help (DPRCUM) 

This field displays the depreciation total at the start of the fiscal year.
This value, generated by the closing or calculation processes, can be forced if the following conditions are met:

The value entered must be less than or equal to the depreciation value (balance sheet value - residual value).
When you force this amount during asset creation, the option Recalculation by application from the Action icon menu becomes available to cancel the data entry. The total will be recalculated at the time of the next calculation.