How to book Stockable,Transactable Item into FA(Fixed Asset)

Hi,

I need suggestion on the below matter.

I need to book an item into Fixed Asset(FA) book. The item we want to book into FA, is  stockable, transactable and saleable. These are our regular saleable furniture Items, we sale those to outside customer through different sales outlets. But in special case, we needed to buy our own product for the outlet own uses and once it purchased it will be counted as Fixed Asset.

For that,regular sales process(sales Order,shipment) is used and also invoice is generated against the sale. Now, we want to add this (sold or purchased) item into FA(Fixed Asset) through mass addition.