Assets and Inventory Plugin comes with Multiple Choice Inventory custom field named "Assets", and it is (by default) added upon installation.
Please do not forget to add this custom field to your screens .
After creating an asset, it can be seen as an option within this inventory custom field.
which you want to link assets.
All defined assets are automatically seen under Assets custom field. Just type a few letter and link asset(s) with the issue as below.
Related issues tab of the asset displays all related issues.