Assets can be automatically created from supplier bills. All you need to do is to set an asset category on your bill line. When the user will validate the bill, an asset will be automatically created, using the information of the supplier bill.
Depending on the information on the asset category, the asset will be created in draft or directly validated. It’s easier to confirm assets directly so that you won’t forget to confirm it afterwards. (Check the field Skip Draft State on Asset Category) Generate assets in draft only when you want your adviser to control all the assets before posting them to your accounts.
Besides, you can also do buy this asset through purchase order, then create Vendor bills.