A factory has many pieces of similar equipment, and attaching a description makes it easier to identify a particular asset. Inventor Factory provides the ability to assign such a tag using the Descriptor command. A descriptor can contain additional information about an asset; such as type, part number, flow rate, etc. A descriptor is added when authoring and publishing an asset in the Asset Builder environment. The descriptor is represented with this icon 
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A published asset can only have one descriptor. If an asset has variants, you can use an iLogic rule to create a descriptor for each variant.
. To learn more, see the Inventor Factory Help topic: Annotations - Asset Tags. What happens to asset annotations in AutoCAD Factory?
Once a 3D layout is synced to AutoCAD Factory, annotations appear as block attributes in a separate text style called Factory_Annotation. The asset tag and descriptor are each assigned their own separate AutoCAD layer. The layer names are Factory_AssetTag and Factory_Descriptor, respectively.
You can use the standard AutoCAD block attribute editing commands like EATTEDIT, -ATTEDIT, and BATTMAN to edit the asset annotations. Control the visibility of the annotations with the ATTDISP command, or by turning layer visibility on/off or freezing the appropriate attribute layer. Use the FIND command to help you locate asset tag and descriptor text in the AutoCAD graphics window.
What happens to asset annotations in Navisworks Factory?
Asset annotations in Navisworks Factory use the same icons as Inventor. You can change the icon visibility from the Factory tab. Click the Quick Properties icon on the Home tab to display the annotation information when the cursor is over the asset.