"Tradable" assets

What makes an asset “Tradable” for Alpaca?

search_params = GetAssetsRequest(asset_class=AssetClass.US_EQUITY, status='active', tradable=True, fractionable=True)

Also I ran the above search params but it returned assets which weren’t tradable nor fractionable, I’m guessing this functionality doesn’t exist in the API.

Is there a way to request features? lol