# Register custom models
URL: https://docs.datarobot.com/en/docs/classic-ui/mlops/deployment/registry/reg-custom-models.html

> Register a custom model in the Model Registry. The Model Registry is an archive of your model packages where you can also deploy and share the packages.

# Register custom models

When you have successfully created and tested a custom inference model, you can register it in the Model Registry.

> [!NOTE] Note
> Although a model package can be created without testing the custom model, DataRobot recommends that you confirm the model passes testing before proceeding. Untested custom models prompt a dialog box warning that the custom model is not tested.

To add a custom model as a registered model or version:

1. Navigate toModel Registry > Custom Model Workshop.
2. From theCustom Model Workshop, click the model you want to register and, on theAssembletab, clickRegister to deploy.
3. In theRegister new modeldialog box, configure the following: FieldDescriptionRegister modelSelect one of the following:Register new model:Create a new registered model. This creates the first version (V1).Save as a new version to existing model:Create a version of an existing registered model. This increments the version number and adds a new version to the registered model.Registered model name / Registered ModelDo one of the following:Registered model name:Enter a unique and descriptive name for the new registered model. If you choose a name that exists anywhere within your organization, theModel registration failedwarning appears.Registered Model:Select the existing registered model you want to add a new version to.Registered model versionAssigned automatically. This displays the expected version number of the version (e.g., V1, V2, V3) you create. This is alwaysV1when you selectRegister a new model.Optional settingsVersion descriptionDescribe the business problem this model package solves, or, more generally, describe the model represented by this version.TagsClick+ Add itemand enter aKeyand aValuefor each key-value pair you want to tag the modelversionwith. Tags do not apply to the registered model, just the versions within. Tags added when registering a new model are applied toV1.
4. ClickAdd to registry.

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