How to do automatic retirement for small amounts

 Hi,

we are using 12.1.3 version & our client requirement is to retire the assets automatically if the asset NBV value less than 100/- in order avoid small decimal depreciation amounts in books. 

we could see lot of assets in journal entry reserve report where the depreciation amounts like 0.03, 0.50, 0.85, 7.95, etc.

could you please let us know how to achieve this requirement.