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  "identifier" : "/documentation/ARKit/ARFrame/worldMappingStatus-swift.property",
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# worldMappingStatus

The feasibility of generating or relocalizing a world map for this frame.

```
var worldMappingStatus: ARFrame.WorldMappingStatus { get }
```

## Discussion

Every world-tracking session builds an internal world map, which ARKit uses to determine the device’s position in the user’s environment. You can save a snapshot of that internal state as an [`ARWorldMap`](/documentation/ARKit/ARWorldMap) object, which you can use later to resume the saved session or share between devices to create a multiuser AR experience.

While you can call [`getCurrentWorldMap(completionHandler:)`](/documentation/ARKit/ARSession/getCurrentWorldMap(completionHandler:)) at any time during a session, some times are better than others. Use this property to determine whether the session currently has enough data to generate a useful [`ARWorldMap`](/documentation/ARKit/ARWorldMap) or if it’s better to wait for the session to map more of the user’s local environment first.

---

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