# Update or Remove Vehicle Models and Databases

To update or remove a vehicle model use the following actions:

- To complete training for all vehicle models that exist in the Media Server database but have incomplete training, use the action `BuildAllVehicleModels`. To confirm that training was successful, use the action `ListVehicleModels` (see List the Vehicle Models in a Database).
- To add additional training images to a vehicle model, use the action `AddVehicleModelImages`. Media Server does not use the new images for recognition until you run the action `BuildVehicleModel`. To confirm that training was successful, use the action `ListVehicleModels` (see List the Vehicle Models in a Database).
- To remove a training image from a vehicle model, use the action `RemoveVehicleModelImages`.
- To modify the vehicle make that is associated with a vehicle model, use the action `SetVehicleMake`.
- To change the label of an image that you added to a vehicle model, use the action `RelabelVehicleModelImage`.
- To move an image from one vehicle model to another, for example if you add an image to the wrong model, use the action `MoveVehicleModelImage`.
- To add, remove, or update custom metadata for a vehicle model, use the actions `AddVehicleModelMetadata`, `RemoveVehicleModelMetadata`, and `UpdateVehicleModelMetadata`.
- To change the identifier of a vehicle model you already added to a database, use the action `RenameVehicleModel`.
- To move a vehicle model to a different database, use the action `MoveVehicleModel`.
- To remove a vehicle model from a database and discard all associated images and metadata, use the action `RemoveVehicleModel`.

To update or remove vehicle model databases, use the following actions:

- To rename a vehicle model database, use the action `RenameVehicleModelDatabase`.
- To delete a vehicle model database and all of the information that it contains, use the action `RemoveVehicleModelDatabase`.

For more information about the actions that you can use to train Media Server, refer to the Media Server Reference.

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