DOO_AssetManagement with no inventory transaction (serialized items)

Summary:

Is it possible to perform asset creation/update through DOO_AssetManagement's Request Asset Creation service without a related inventory transaction?

Content (please ensure you mask any confidential information):
Good day everyone,

I'm investigating a business scenario involving assets which should exist in Fixed Assets and Maintenance, but not necessarily transacted in inventory. This is not a final solution design, for now I'm only trying to understand limitations of the application. The goal ultimately is to assign a customer to an asset in Installed Base.

With an inventory transaction on the serialized item, I've already implemented two test flows that look like this: