# Asset and model states
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When you create, update, or delete an asset, an asset model, or a component model, the changes take time to propagate. Amazon IoT SiteWise resolves these operations asynchronously and updates the status of each resource. Each asset, asset model, and component model has a status field that contains the state of the resource and any error message, if applicable. The state can be one of the following values:
+ `ACTIVE` – The resource is active. This is the only state in which you can query and interact with assets, asset models, and component models.
+ `CREATING` – The resource is being created.
+ `UPDATING` – The resource is being updated.
+ `DELETING` – The resource is being deleted.
+ `PROPAGATING` – (Asset models and component models only) The changes are propagating to all dependent resources (from asset model to assets, or from component model to asset models).
+ `FAILED` – The resource failed to validate during a create or update operation, possibly due to a circular reference in an expression. You can delete resources that are in the `FAILED` state.

Some of the create, update, and delete operations in Amazon IoT SiteWise place an asset, asset model, or component model in a state other than `ACTIVE` while the operation resolves. To query or interact with a resource after you perform one of these operations, you must wait until the state changes to `ACTIVE`. Otherwise, your requests fail.

**Topics**
+ [Check the status of an asset](check-asset-status.md)
+ [Check the status of an asset or component model](check-model-status.md)