Asset Accounting - prevent asset negative balance

Hello All,

My business requirement is to prevent asset negative book value.

Current configuration is allowing to go asset negative book value. now user want to prevent that, when user try to post depreciation with more than asset net book value it has to throw an error.

like same, when try to post credit memo with more than asset net book value system throw an error. it should allow less than or equal to asset net book value only.

Could you please tell me to get this where i need to change the configuration.

Thanks, in advance.

Suneel